Episodes
E1 • Pilot
Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins by showing them that as much as they know about science, they know little about actual living.
22m • 2007Brilliant physicist roommates Leonard and Sheldon meet their new neighbor Penny, who begins by showing them that as much as they know about science, they know little about actual living.
E2 • The Big Bran Hypothesis
Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
20m • 2007Leonard volunteers to sign for a package in an attempt to make a good impression on Penny, but when he enlists Sheldon for help, his attempt at chivalry goes terribly awry.
E3 • The Fuzzy Boots Corollary
Leonard asks a woman out after he finds out that Penny is seeing someone.
21m • 2007Leonard asks a woman out after he finds out that Penny is seeing someone.
E4 • The Luminous Fish Effect
Getting fired forces Sheldon to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
20m • 2007Getting fired forces Sheldon to explore what life has to offer outside physics, leaving Leonard to take drastic action to snap his friend out of his funk.
E5 • The Hamburger Postulate
Sensing that he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
19m • 2007Sensing that he's wasting his time on Penny, Leonard ends up making a connection with Leslie.
E6 • The Middle-Earth Paradigm
Penny hosts a Hallowe'en party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
20m • 2007Penny hosts a Hallowe'en party, putting Leonard, Sheldon, Wolowitz, and Koothrappali through a new test of their social skills.
E7 • The Dumpling Paradox
With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team.
20m • 2007With Wolowitz AWOL with one of her friends, Penny's recruited to fill in for him on the guys' Halo team.
E8 • The Grasshopper Experiment
Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
19m • 2007Raj's parents set him up on a blind date, but just when he discovers he can talk to her, she shows interest in Sheldon.
E9 • The Cooper-Hofstadter Polarization
When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard. Penny's intervention only exacerbates the situation.
19m • 2007When they're invited to present at a physics conference, Sheldon's reluctance to share the credit leads to a tiff between him and Leonard. Penny's intervention only exacerbates the situation.
E10 • The Loobenfeld Decay
Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
20m • 2007Leonard and Sheldon each lie to avoid seeing Penny's concert, but Sheldon's is a bit too complicated for his own good.
E11 • The Pancake Batter Anomaly
With his friends knowing how sour he acts when he’s sick, Sheldon is nursed by Penny, who hasn't got a clue what she's in for.
21m • 2007With his friends knowing how sour he acts when he’s sick, Sheldon is nursed by Penny, who hasn't got a clue what she's in for.
E12 • The Jerusalem Duality
With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
19m • 2007With Sheldon rattled over meeting Dennis, a 15-year-old physicist who's smarter than he, Leonard helps him look for a way to debunk Dennis's research.
E13 • The Bat Jar Conjecture
Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team hoping to prove he's superior.
21m • 2007Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team hoping to prove he's superior.
E14 • The Nerdvana Annihilation
When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
19m • 2007When delivery of another collectible leads to Penny's lashing out at Leonard, he decides it's time to give up his habit, much to his friends' protestation.
E15 • The Pork Chop Indeterminacy
The rest of the gang fall for Sheldon's twin sister and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
21m • 2007The rest of the gang fall for Sheldon's twin sister and Leonard's plan to win her heart is derailed when Sheldon declares he'll be the one to decide who can date her.
E16 • The Peanut Reaction
Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
19m • 2007Penny wants to throw a surprise party for Leonard, but Sheldon's indulgence at an electronics store throws her off-track.
E17 • The Tangerine Factor
Penny's break-up spurs Leonard to summon the courage to ask her out. Both go to Sheldon for advice on their upcoming date.
19m • 2007Penny's break-up spurs Leonard to summon the courage to ask her out. Both go to Sheldon for advice on their upcoming date.
E1 • The Bad Fish Paradigm
Penny's first date with Leonard goes awry and she finds Sheldon to be an unwilling confidant.
21m • 2008Penny's first date with Leonard goes awry and she finds Sheldon to be an unwilling confidant.
E2 • The Codpiece Topology
A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
20m • 2008A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
E3 • The Barbarian Sublimation
Sheldon creates a monster when he introduces Penny to online gaming.
20m • 2008Sheldon creates a monster when he introduces Penny to online gaming.
E4 • The Griffin Equivalency
Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
20m • 2008Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
E5 • The Euclid Alternative
Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
19m • 2008Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.
E6 • The Cooper-Nowitzki Theorem
Sheldon and the gang are confused when a young grad student is attracted to him.
20m • 2008Sheldon and the gang are confused when a young grad student is attracted to him.
E7 • The Panty Piñata Polarization
When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
20m • 2008When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
E8 • The Lizard-Spock Expansion
Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
19m • 2008Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
E9 • The White Asparagus Triangulation
Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
20m • 2008Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
E10 • The Vartabedian Conundrum
Leonard asks Penny for advice when his new relationship starts moving too fast.
20m • 2008Leonard asks Penny for advice when his new relationship starts moving too fast.
E11 • The Bath Item Gift Hypothesis
Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
20m • 2008Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
E12 • The Killer Robot Instability
Penny's criticism of Wolowitz's romantic life pushes him into depression and he goes AWOL for a fighting robot battle the rest of guys are depending on him for.
20m • 2008Penny's criticism of Wolowitz's romantic life pushes him into depression and he goes AWOL for a fighting robot battle the rest of guys are depending on him for.
E13 • The Friendship Algorithm
Sheldon creates a scientific procedure for making friends.
20m • 2008Sheldon creates a scientific procedure for making friends.
E14 • The Financial Permeability
Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
21m • 2008Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
E15 • The Maternal Capacitance
Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
20m • 2008Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.
E16 • The Cushion Saturation
A paintball game leads to a fight between Sheldon and Penny and romance for Leslie and Wolowitz.
20m • 2008A paintball game leads to a fight between Sheldon and Penny and romance for Leslie and Wolowitz.
E17 • The Terminator Decoupling
Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
20m • 2008Leonard, Sheldon and Wolowitz are ecstatic to learn that a famous science-fiction actress (Summer Glau) is on board the train they are taking to San Francisco.
E18 • The Work Song Nanocluster
Penny's home business turns into a complete nightmare when Sheldon takes over.
20m • 2008Penny's home business turns into a complete nightmare when Sheldon takes over.
E19 • The Dead Hooker Juxtaposition
Penny squares off with a new beautiful female neighbor who may become the building's 'new Penny'.
19m • 2008Penny squares off with a new beautiful female neighbor who may become the building's 'new Penny'.
E20 • The Hofstadter Isotope
A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
19m • 2008A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
E21 • The Vegas Renormalization
Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas. Sheldon becomes locked out of his apartment so must stay with Penny.
21m • 2008Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas. Sheldon becomes locked out of his apartment so must stay with Penny.
E22 • The Classified Materials Turbulence
Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
18m • 2008Penny's second date with Stuart sees her making a comment that gives Leonard new hope for a relationship with her. Wolowitz realizes there's a crucial error in a NASA project he's working on.
E23 • The Monopolar Expedition
The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
20m • 2008The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
E1 • The Electric Can Opener Fluctuation
When Sheldon learns that the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens Leonard's hope for some romantic time with Penny and the guys' friendship with Sheldon.
21m • 2009When Sheldon learns that the guys tampered with his expedition data he got from the arctic, he leaves to Texas in disgrace. This results in the guys following him, which threatens Leonard's hope for some romantic time with Penny and the guys' friendship with Sheldon.
E2 • The Jiminy Conjecture
Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.
20m • 2009Leonard and Penny struggle to recover from an awkward first hookup while Sheldon and Howard stake their best comic books on a bet to determine the species of a cricket.
E3 • The Gothowitz Deviation
Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.
20m • 2009Howard and Raj visit a Goth nightclub to pick up women while Sheldon attempts to build a better Penny using chocolate-based behavior modification.
E4 • The Pirate Solution
Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.
20m • 2009Raj must find a new job or be sent back to India, but Sheldon has a solution, which leaves Leonard and Penny dealing with Howard as a third wheel.
E5 • The Creepy Candy Coating Corollary
After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.
20m • 2009After overhearing that Wil Wheaton is entering a trading-card competition, Sheldon decides to enter it himself. Meanwhile, Penny sets up one of her friends on a date with Wolowitz.
E6 • The Cornhusker Vortex
Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.
19m • 2009Sheldon becomes Leonard's teacher in order to understand football, while an incident with flying a kite threatens Howard and Raj's friendship.
E7 • The Guitarist Amplification
A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.
19m • 2009A squabble between Leonard and Penny sees Sheldon playing mediator, though out of his own incovenience from the sitiation rather than altruism.
E8 • The Adhesive Duck Deficiency
With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
20m • 2009With Leonard, Howard and Raj away camping in the desert, an injured Penny has only Sheldon to rely on.
E9 • The Vengeance Formulation
After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.
18m • 2009After he's humiliated on National Public Radio, Sheldon vows to destroy Kripke, while Wolowitz tries not to destroy his new relationship with Bernadette.
E10 • The Gorilla Experiment
Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.
20m • 2009Penny gets help from Sheldon in order to understand what Leonard's work is, while Wolowitz develops a jealousy when Leonard starts hanging out with his new girlfriend.
E11 • The Maternal Congruence
A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.
19m • 2009A Christmas visit from his mother has Leonard discovering she's kept a lot of news from him that she shares with Sheldon and worrying if she'll approve of his romance with Penny.
E12 • The Psychic Vortex
Leonard is aghast to find out a secret of Penny's: she believes in psychics. Meanwhile, Sheldon tries to assist Koothrappali in picking up a girl at a university mixer.
19m • 2009Leonard is aghast to find out a secret of Penny's: she believes in psychics. Meanwhile, Sheldon tries to assist Koothrappali in picking up a girl at a university mixer.
E13 • The Bozeman Reaction
When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
19m • 2009When their apartment is robbed, Leonard and Sheldon turn to their friends to create a state-of-the-art security system.
E14 • The Einstein Approximation
Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
18m • 2009Sheldon's search for the answer to a physics problem leads him to work at the Cheesecake Factory with Penny.
E15 • The Large Hadron Collision
Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
20m • 2009Leonard can only bring one guest on a trip to see CERN's Large Hadron Collider (the world's largest and highest energy particle accelerator) in Switzerland on Valentine's Day.
E16 • The Excelsior Acquisition
Sheldon winds up in traffic court when he gets a ticket because of Penny.
20m • 2009Sheldon winds up in traffic court when he gets a ticket because of Penny.
E17 • The Precious Fragmentation
When the guys find a ring from 'The Lord of the Rings' at a garage sale, it threatens to tear them apart.
20m • 2009When the guys find a ring from 'The Lord of the Rings' at a garage sale, it threatens to tear them apart.
E18 • The Pants Alternative
Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
20m • 2009Sheldon's friends come to his aid when his fear of public speaking stands between him and a coveted award.
E19 • The Wheaton Recurrence
A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
20m • 2009A fight between Leonard and Penny threatens their relationship, while Sheldon battles Wil Wheaton in bowling.
E20 • The Spaghetti Catalyst
When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
19m • 2009When Leonard and Penny aren't speaking, Sheldon goes to extremes to keep them both happy.
E21 • The Plimpton Stimulation
Leonard and Sheldon compete for the attention of a famous female physicist.
20m • 2009Leonard and Sheldon compete for the attention of a famous female physicist.
E22 • The Staircase Implementation
Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
19m • 2009Leonard tells Penny about how he met Sheldon for the first time...and what happened to the elevator.
E23 • The Lunar Excitation
While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
19m • 2009While Penny worries that dating Leonard has ruined her for normal guys, Wolowitz and Koothrappali search for Sheldon's perfect match online.
E1 • The Robotic Manipulation
Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
21m • 2010Penny tags along on Sheldon's first ever date; Wolowitz finds a new use for a robotic arm.
E2 • The Cruciferous Vegetable Amplification
Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
20m • 2010Realizing he will not live long enough to download his consciousness into a robot body, Sheldon tries to extend his life span.
E3 • The Zazzy Substitution
The guys are concerned as Sheldon searches for an alternative to human companionship.
21m • 2010The guys are concerned as Sheldon searches for an alternative to human companionship.
E4 • The Hot Troll Deviation
An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
19m • 2010An embarrassing secret of Wolowitz's comes to light, while Sheldon and Raj have a small war at work.
E5 • The Desperation Emanation
Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
20m • 2010Leonard realizes he’s the only one without a girlfriend, while Sheldon wants to get rid of his.
E6 • The Irish Pub Formulation
Leonard keeps an affair a secret from Sheldon, Howard and Raj.
21m • 2010Leonard keeps an affair a secret from Sheldon, Howard and Raj.
E7 • The Apology Insufficiency
Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
21m • 2010Sheldon's answers during an FBI interview put Wolowitz's security clearance in jeopardy.
E8 • The 21-Second Excitation
While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
18m • 2010While the guys camp in line for a long-awaited movie screening, Penny and Bernadette invite Amy to her first slumber party.
E9 • The Boyfriend Complexity
Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
20m • 2010Penny asks Leonard to lie to her father, while Howard, Raj and Bernadette pull an all-nighter at a telescope.
E10 • The Alien Parasite Hypothesis
Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
19m • 2010Amy finds she has sexual feelings for Penny's ex, while Koothrappali and Wolowitz try to prove who would be the better superhero.
E11 • The Justice League Recombination
The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
19m • 2010The guys find a "super" use for Penny's new boyfriend, Zack, when they enter a costume contest as the Justice League.
E12 • The Bus Pants Utilization
Leonard's idea for a smartphone app derails his friendship with Sheldon.
21m • 2010Leonard's idea for a smartphone app derails his friendship with Sheldon.
E13 • The Love Car Displacement
Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
20m • 2010Bernadette runs into her ex-boyfriend while attending a science event with Wolowitz.
E14 • The Thespian Catalyst
Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
21m • 2010Hoping it will make him a better teacher, Sheldon has Penny give him acting lessons. Raj has fantasies about a friend's girlfriend.
E15 • The Benefactor Factor
A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
19m • 2010A wealthy donor to the university makes Leonard consider how far he's willing to go for the sake of science.
E16 • The Cohabitation Formulation
As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
20m • 2010As Wolowitz contemplates taking things with Bernadette to the next level, Leonard rekindles his relationship with Raj's sister.
E17 • The Toast Derivation
Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
20m • 2010Sheldon becomes concerned when everybody begins to hang out at Raj's apartment and discovers Leonard is the center of the group.
E18 • The Prestidigitation Approximation
Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
20m • 2010Sheldon is baffled by Wolowitz's magic trick. Meanwhile, Leonard realizes dating Priya may make it impossible to continue being friends with Penny.
E19 • The Zarnecki Incursion
Sheldon's World of Warcraft online game account is hacked and he is determined to find out who did it. Also Penny shares some girl talk with her friends about Leonard and his new girlfriend.
21m • 2010Sheldon's World of Warcraft online game account is hacked and he is determined to find out who did it. Also Penny shares some girl talk with her friends about Leonard and his new girlfriend.
E20 • The Herb Garden Germination
Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
20m • 2010Sheldon and Amy decide to start several rumors about the others as a test. Meanwhile, Howard takes his relationship with Bernadette to even higher level.
E21 • The Agreement Dissection
When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement.
20m • 2010When Leonard spends too much time in the shower with Priya, Sheldon charges Leonard with two violations of the roommate agreement.
E22 • The Wildebeest Implementation
Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
20m • 2010Raj attempts to cure his social anxiety disorder while Penny uses Bernadette to spy on Leonard and his girlfriend.
E23 • The Engagement Reaction
When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
19m • 2010When Howard finally breaks the news to his mom that he's engaged to Bernadette, it lands her in the hospital.
E24 • The Roommate Transmogrification
When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she regrets.
21m • 2010When Bernadette receives her PhD, Wolowitz feels emasculated. Raj and Leonard swap places and Penny does something she regrets.
E1 • The Skank Reflex Analysis
Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
21m • 2011Penny is worried with how damaged her friendship with the guys will be in the aftermath of her sleeping with Raj while Sheldon becomes the leader of the paintball team.
E2 • The Infestation Hypothesis
A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
19m • 2011A fight between Sheldon and Penny leaves Amy caught in the middle, while Leonard tries to spice up his long-distance relationship with Priya.
E3 • The Pulled Groin Extrapolation
Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
19m • 2011Leonard and Amy get to know each other better, while Howard and Bernadette spend the weekend with Mrs. Wolowitz.
E4 • The Wiggly Finger Catalyst
Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
19m • 2011Penny plays Matchmaker for Raj, which results in him finding a girl he is comfortable talking to.
E5 • The Russian Rocket Reaction
Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
21m • 2011Sheldon and Leonard get invited to a party at Wil Wheaton's house, and Howard gets an out-of-this-world opportunity.
E6 • The Rhinitis Revelation
Sheldon's mother, Mary Cooper, comes to visit, but Sheldon is annoyed that she spends time with the rest of the gang instead of catering to his every demand.
20m • 2011Sheldon's mother, Mary Cooper, comes to visit, but Sheldon is annoyed that she spends time with the rest of the gang instead of catering to his every demand.
E7 • The Good Guy Fluctuation
A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
19m • 2011A cute comic book artist puts Leonard and Priya’s relationship to the test, while Sheldon tries to scare the guys for Halloween.
E8 • The Isolation Permutation
Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
20m • 2011Amy becomes heartbroken when she discovers that Penny and Bernadette went wedding dress shopping without her.
E9 • The Ornithophobia Diffusion
Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
20m • 2011Leonard and Penny try hanging out as friends on a 'non-date', but end up purposely ruining each others chances with perspective dates. Meanwhile, Sheldon enlists the help of Bernadette and Amy to overcome his fear of birds.
E10 • The Flaming Spittoon Acquisition
Sheldon becomes jealous when Stuart asks Amy for a date.
20m • 2011Sheldon becomes jealous when Stuart asks Amy for a date.
E11 • The Speckerman Recurrence
Leonard must face his fears after being contacted by his high school tormentor.
19m • 2011Leonard must face his fears after being contacted by his high school tormentor.
E12 • The Shiny Trinket Maneuver
Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
20m • 2011Sheldon gets in trouble with Amy when he isn't impressed by her recent accomplishment, and Howard must come to grips with Bernadette's dislike of children.
E13 • The Recombination Hypothesis
Leonard, having broken up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two.
20m • 2011Leonard, having broken up with Priya, asks Penny out to a spur-of the-moment romantic dinner for two.
E14 • The Beta Test Initiation
Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a 'woman' he can talk to without being drunk, in the form of Siri on his new phone.
20m • 2011Leonard and Penny deal with the idea of starting a relationship again and Raj finally finds a 'woman' he can talk to without being drunk, in the form of Siri on his new phone.
E15 • The Friendship Contraction
Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
20m • 2011Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Wolowitz tries to pick his astronaut nickname.
E16 • The Vacation Solution
When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
20m • 2011When Sheldon is forced to take his vacation, he goes to work with Amy in her neurobiology lab.
E17 • The Rothman Disintegration
Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs it up when Amy is over.
20m • 2011Penny is horrified when Amy gives her a gift: a huge, quite horrible painting of the two of them. With no good way to avoid displaying it, she only hangs it up when Amy is over.
E18 • The Werewolf Transformation
Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space.
20m • 2011Sheldon becomes agitated when his regular barber is out sick. Astronaut training causes Howard to reconsider wanting to go into space.
E19 • The Weekend Vortex
Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
19m • 2011Sheldon must choose between joining Amy at her aunt's birthday party or playing videogames all weekend with the guys.
E20 • The Transporter Malfunction
Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the 'Future Mrs. Koothrappali' after his parents set him up on a date.
20m • 2011Penny buys Leonard and Sheldon “Star Trek” collectibles as a thank-you, leading Sheldon to be haunted by Mr. Spock. Meanwhile, Raj decides he has met the 'Future Mrs. Koothrappali' after his parents set him up on a date.
E21 • The Hawking Excitation
When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
18m • 2011When Wolowitz gets to work with Stephen Hawking, Sheldon is willing to do anything to meet his hero.
E22 • The Stag Convergence
After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
21m • 2011After the guys throw Howard a bachelor party, Bernadette reconsiders marrying him after learning about his sexual history.
E23 • The Launch Acceleration
When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy.
20m • 2011When NASA moves up Howard's mission, he must face his fears and Bernadette's dad, thus putting the wedding plans in jeopardy.
E24 • The Countdown Reflection
The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding.
20m • 2011The fifth season ends with Howard and Bernadette deciding to get married before his NASA mission, causing the gang to scurry into overdrive in an effort to stage the wedding.
E1 • The Hofstadter Insufficiency
With Leonard away, Sheldon and Penny spend quality time together sharing intimate secrets. Also, Wolowitz helps Raj get over his ex-girlfriend.
20m • 2013With Leonard away, Sheldon and Penny spend quality time together sharing intimate secrets. Also, Wolowitz helps Raj get over his ex-girlfriend.
E2 • The Deception Verification
Leonard and Sheldon's friendship is tested; Wolowitz's relationship with his mom causes a threat to his masculinity.
20m • 2013Leonard and Sheldon's friendship is tested; Wolowitz's relationship with his mom causes a threat to his masculinity.
E3 • The Scavenger Vortex
When the entire gang competes in a scavenger hunt designed by Raj, it brings out the best - and worst - in everyone.
20m • 2013When the entire gang competes in a scavenger hunt designed by Raj, it brings out the best - and worst - in everyone.
E4 • The Raiders Minimization
Beverly Hofstadter writes a psychology book about Leonard which Penny buys and reads. Sheldon wants to ruin something for Amy after she ruins an Indiana Jones movie for him and Raj and Stuart try online dating.
20m • 2013Beverly Hofstadter writes a psychology book about Leonard which Penny buys and reads. Sheldon wants to ruin something for Amy after she ruins an Indiana Jones movie for him and Raj and Stuart try online dating.
E5 • The Workplace Proximity
Amy starts working at Caltech which causes friction with Sheldon. Howard agrees with Sheldon who mentions this to Bernadette causing a big fight for the Wolowitzes.
18m • 2013Amy starts working at Caltech which causes friction with Sheldon. Howard agrees with Sheldon who mentions this to Bernadette causing a big fight for the Wolowitzes.
E6 • The Romance Resonance
Sheldon's latest scientific breakthrough leaves him feeling like a fraud and a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.
20m • 2013Sheldon's latest scientific breakthrough leaves him feeling like a fraud and a romantic gesture between Howard and Bernadette causes Penny to up her game with Leonard.
E7 • The Proton Displacement
When Professor Proton asks Leonard for help with an experiment, Sheldon retaliates by befriending Proton's rival, Bill Nye.
19m • 2013When Professor Proton asks Leonard for help with an experiment, Sheldon retaliates by befriending Proton's rival, Bill Nye.
E8 • The Itchy Brain Simulation
When a mistake comes to light, Sheldon makes Leonard walk a mile in his shoes; Penny decides to confront Raj's ex.
19m • 2013When a mistake comes to light, Sheldon makes Leonard walk a mile in his shoes; Penny decides to confront Raj's ex.
E9 • The Thanksgiving Decoupling
Sheldon protests when the gang drags him to Mrs. Wolowitz’s house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.
18m • 2013Sheldon protests when the gang drags him to Mrs. Wolowitz’s house for Thanksgiving. Meanwhile, Penny and Leonard must deal with a mistake from her past.
E10 • The Discovery Dissipation
Leonard and Amy help Sheldon cope with the shame he’s feeling after his accidental contribution to science is disproved. Meanwhile, Raj must stay with Howard and Bernadette for a week.
19m • 2013Leonard and Amy help Sheldon cope with the shame he’s feeling after his accidental contribution to science is disproved. Meanwhile, Raj must stay with Howard and Bernadette for a week.
E11 • The Cooper Extraction
While Sheldon is in Texas, the rest of the gang realizes how much he has changed their lives as they decorate the apartment Christmas tree.
20m • 2013While Sheldon is in Texas, the rest of the gang realizes how much he has changed their lives as they decorate the apartment Christmas tree.
E12 • The Hesitation Ramification
When Penny’s big acting break on NCIS is a bust, Leonard struggles to help her, which results in Penny asking Leonard a bold relationship question. Meanwhile, Sheldon tries to learn how to be funny.
20m • 2013When Penny’s big acting break on NCIS is a bust, Leonard struggles to help her, which results in Penny asking Leonard a bold relationship question. Meanwhile, Sheldon tries to learn how to be funny.
E13 • The Occupation Recalibration
Sheldon tries to relax after he is forced to take a vacation. Meanwhile, Leonard struggles to be supportive of Penny after she quits her job, and Bernadette seeks Stuart’s help in replacing one of Howard’s comic books.
20m • 2013Sheldon tries to relax after he is forced to take a vacation. Meanwhile, Leonard struggles to be supportive of Penny after she quits her job, and Bernadette seeks Stuart’s help in replacing one of Howard’s comic books.
E14 • The Convention Conundrum
After the guys can’t get Comic-Con tickets, Sheldon tries to hold his own convention and winds up spending a wild night with James Earl Jones.
20m • 2013After the guys can’t get Comic-Con tickets, Sheldon tries to hold his own convention and winds up spending a wild night with James Earl Jones.
E15 • The Locomotive Manipulation
Sheldon and Amy go on a trip to wine country with Howard and Bernadette; Penny and Leonard rush Raj's dog to the vet.
19m • 2013Sheldon and Amy go on a trip to wine country with Howard and Bernadette; Penny and Leonard rush Raj's dog to the vet.
E16 • The Table Polarization
Leonard buys a dining room table and it causes Sheldon to reevaluate the changes in his life. Meanwhile, Wolowitz is offered a chance to go back to space and Bernadette struggles with whether or not to encourage him.
19m • 2013Leonard buys a dining room table and it causes Sheldon to reevaluate the changes in his life. Meanwhile, Wolowitz is offered a chance to go back to space and Bernadette struggles with whether or not to encourage him.
E17 • The Friendship Turbulence
Bernadette tries to negotiate peace between Sheldon and Wolowitz; Penny receives an embarrassing offer and Raj wants Amy to write to a woman on his behalf.
18m • 2013Bernadette tries to negotiate peace between Sheldon and Wolowitz; Penny receives an embarrassing offer and Raj wants Amy to write to a woman on his behalf.
E18 • The Mommy Observation
When Sheldon visits his Mom in Houston, he is forced to confront a new reality. Meanwhile, Raj’s ‘Murder Mystery’ party starts some fights within the gang.
20m • 2013When Sheldon visits his Mom in Houston, he is forced to confront a new reality. Meanwhile, Raj’s ‘Murder Mystery’ party starts some fights within the gang.
E19 • The Indecision Amalgamation
While Raj is wracked with guilt when he tries to date two women at once, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is torn trying to choose between two gaming systems.
18m • 2013While Raj is wracked with guilt when he tries to date two women at once, Penny wrestles with whether to take a role in a cheesy movie and Sheldon is torn trying to choose between two gaming systems.
E20 • The Relationship Diremption
Sheldon faces a personal crisis after deciding he’s wasting his time with string theory. Meanwhile, a double date between Raj, Emily and the Wolowitzes ends in embarrassment for Howard.
20m • 2013Sheldon faces a personal crisis after deciding he’s wasting his time with string theory. Meanwhile, a double date between Raj, Emily and the Wolowitzes ends in embarrassment for Howard.
E21 • The Anything Can Happen Recurrence
To prepare for a date with Emily, Howard acclimatizes Raj to horror movies. Penny and Sheldon are upset when they discover Amy and Bernadette lied to avoid hanging out with them.
18m • 2013To prepare for a date with Emily, Howard acclimatizes Raj to horror movies. Penny and Sheldon are upset when they discover Amy and Bernadette lied to avoid hanging out with them.
E22 • The Proton Transmogrification
As the gang celebrates Star Wars Day, Sheldon discovers he is having difficulty dealing with the death of Professor Proton.
20m • 2013As the gang celebrates Star Wars Day, Sheldon discovers he is having difficulty dealing with the death of Professor Proton.
E23 • The Gorilla Dissolution
A bad day causes Penny to reevaluate her life choices – including Leonard. Meanwhile, Howard and Bernadette struggle to care for Mrs. Wolowitz, and Raj gets relationship advice from Sheldon.
18m • 2013A bad day causes Penny to reevaluate her life choices – including Leonard. Meanwhile, Howard and Bernadette struggle to care for Mrs. Wolowitz, and Raj gets relationship advice from Sheldon.
E24 • The Status Quo Combustion
Sheldon get upset about his career, the destruction of the comic book store and Leonard and Penny's future living arrangements. Howard and Bernadette can't keep hold of a carer for his mother.
20m • 2013Sheldon get upset about his career, the destruction of the comic book store and Leonard and Penny's future living arrangements. Howard and Bernadette can't keep hold of a carer for his mother.
E1 • The Locomotion Interruption
Leonard and Amy take a road trip.
20m • 2014Leonard and Amy take a road trip.
E2 • The Junior Professor Solution
Howard takes a class that Sheldon's teaching.
19m • 2014Howard takes a class that Sheldon's teaching.
E3 • The First Pitch Insufficiency
Howard is invited by NASA to throw the first pitch at a game.
19m • 2014Howard is invited by NASA to throw the first pitch at a game.
E4 • The Hook-Up Reverberation
Penny wonders why Raj's girlfriend doesn't like her.
18m • 2014Penny wonders why Raj's girlfriend doesn't like her.
E5 • The Focus Attentuation
The guys unsuccessfully try to invent "the next big thing".
18m • 2014The guys unsuccessfully try to invent "the next big thing".
E6 • The Expedition Approximation
Sheldon and Raj venture underground in the name of science.
21m • 2014Sheldon and Raj venture underground in the name of science.
E7 • The Misinterpretation Agitation
Penny's flirtatious sales techniques work a little too well.
19m • 2014Penny's flirtatious sales techniques work a little too well.
E8 • The Prom Equivalency
Love is in the air when the gang recreates a prom night.
19m • 2014Love is in the air when the gang recreates a prom night.
E9 • The Septum Deviation
Leonard's minor surgery leads to Sheldon's major reaction.
19m • 2014Leonard's minor surgery leads to Sheldon's major reaction.
E10 • The Champagne Reflection
Sheldon records the final instalment of "Fun with Flags".
19m • 2014Sheldon records the final instalment of "Fun with Flags".
E11 • The Clean Room Infiltration
Amy forces Sheldon to celebrate a Victorian Christmas.
19m • 2014Amy forces Sheldon to celebrate a Victorian Christmas.
E12 • The Space Probe Disintegration
The guys finally agree to do something the girls like.
19m • 2014The guys finally agree to do something the girls like.
E13 • The Anxiety Optimization
Sheldon asks his friends to challenge him.
19m • 2014Sheldon asks his friends to challenge him.
E14 • The Troll Manifestation
Leonard and Sheldon defend themselves from an online bully.
20m • 2014Leonard and Sheldon defend themselves from an online bully.
E15 • The Comic Book Store Regeneration
Everyone awaits the reopening of Stuart's comic bookstore.
19m • 2014Everyone awaits the reopening of Stuart's comic bookstore.
E16 • The Intimacy Acceleration
Sheldon and Penny try an experiment in falling in love.
19m • 2014Sheldon and Penny try an experiment in falling in love.
E17 • The Colonization Application
Sheldon applies for a one-way mission to colonise Mars.
19m • 2014Sheldon applies for a one-way mission to colonise Mars.
E18 • The Leftover Thermalization
A final family dinner is held for Mrs. Wolowitz.
19m • 2014A final family dinner is held for Mrs. Wolowitz.
E19 • The Skywalker Incursion
Sheldon and Leonard try to sneak onto Skywalker Ranch.
20m • 2014Sheldon and Leonard try to sneak onto Skywalker Ranch.
E20 • The Fortification Implementation
Wolowitz meets the half-brother he never knew he had.
19m • 2014Wolowitz meets the half-brother he never knew he had.
E21 • The Communication Deterioration
Penny contemplates a return to acting.
18m • 2014Penny contemplates a return to acting.
E22 • The Graduation Transmission
Raj's father cuts him off from the family fortune.
18m • 2014Raj's father cuts him off from the family fortune.
E23 • The Maternal Combustion
Sparks fly when Leonard and Sheldon's mothers finally meet.
18m • 2014Sparks fly when Leonard and Sheldon's mothers finally meet.
E24 • The Commitment Determination
Sheldon pushes Leonard and Penny to set a date.
19m • 2014Sheldon pushes Leonard and Penny to set a date.
E1 • The Matrimonial Momentum
After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.
19m • 2015After driving to Vegas to get married, Penny struggles with Leonard’s confession that he kissed another girl. Also, Sheldon doesn't know how to act after Amy pushes pause on their relationship.
E2 • The Separation Oscillation
Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of 'Fun with Flags' after his breakup with Amy
18m • 2015Leonard confronts the woman he kissed on the North Sea in an attempt to set Penny's mind at ease. Also, Sheldon films a special episode of 'Fun with Flags' after his breakup with Amy
E3 • The Bachelor Party Corrosion
The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.
19m • 2015The guys' science skills are put to the test when they get a flat tire during Leonard's bachelor party weekend in Mexico. Also, the girls force Penny to finally tell her family that she eloped with Leonard.
E4 • The 2003 Approximation
Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny.
18m • 2015Sheldon learns of an impending change in his living arrangements and decides to revert back to 2003, a simpler time before he met Leonard and Penny.
E5 • The Perspiration Implementation
The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy.
18m • 2015The guys take a fencing lesson from Barry Kripke and Sheldon finds himself in an awkward position when Kripke expresses interest in Amy.
E6 • The Helium Insufficiency
In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.
18m • 2015In the midst of a nation-wide helium shortage, Sheldon and Leonard take desperate measures to get the supplies they need. Also, Penny and Bernadette download a dating app on Amy's phone to try and find her a new man.
E7 • The Spock Resonance
Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.
18m • 2015Wil Wheaton interviews Sheldon for a Star Trek documentary where he reveals the ring and his plan to propose to Amy. Bernadette wants to start renovating the house and the topic of starting a family together with Howard is brought up.
E8 • The Mystery Date Observation
Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy.
18m • 2015Sheldon, Wolowitz and Koothrappali post an online advertisement to find Sheldon a new girlfriend. Also, when Amy is coy with details about a guy she is dating, Penny and Bernadette decide to spy.
E9 • The Platonic Permutation
Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily.
20m • 2015Sheldon and Amy try hanging out as friends when they spend Thanksgiving together at the aquarium. Also, Wolowitz reluctantly agrees to volunteer at the soup kitchen with Bernadette, Raj and Emily.
E10 • The Earworm Reverberation
Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date.
20m • 2015Sheldon has a revelation when he realizes why a song was stuck in his head. Also, Amy invites Dave over for dinner despite their previously awkward date.
E11 • The Opening Night Excitation
After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.
20m • 2015After more than five years of dating, Sheldon and Amy spend their first night together. Also, Leonard, Wolowitz, and Koothrappali must decide who will take their extra Star Wars movie ticket.
E12 • The Sales Call Sublimation
Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery.
18m • 2015Penny gets more than she bargained for when Leonard agrees to meet with a psychiatrist on her behalf. Also, Sheldon and Koothrappali collaborate on an astronomical discovery.
E13 • The Empathy Optimization
After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.
18m • 2015After having to deal with a sick Sheldon, Leonard, Penny and the gang try to treat themselves to a Sheldon-free weekend.
E14 • The Meemaw Materialization
Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.
18m • 2015Meemaw meets Amy, but it isn't all roses. Meemaw seems to have an axe to grind with her. Sheldon comes to Amy's defense, but not before Meemaw lets a little secret of his slip.
E15 • The Valentino Submergence
Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.
19m • 2015Sheldon and Amy host a live Valentine's Day episode of Fun with Flags, Leonard and Penny grapple with getting older, Howard and Bernadette find a surprise in their hot tub and Raj is torn between Emily and the cute girl he met at the Comic Bookstore.
E16 • The Positive Negative Reaction
When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke.
19m • 2015When the gang finds out about Bernadette’s pregnancy, they celebrate by singing karaoke.
E17 • The Celebration Experimentation
After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
18m • 2015After more than nine years together, the gang finally celebrates Sheldon’s birthday, surprising him with a special guest.
E18 • The Application Deterioration
Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.
18m • 2015Leonard, Sheldon, and Wolowitz run into problems when they file for a patent for their infinite persistence gyroscope. Also, Penny, Amy and Bernadette give Koothrappali dating advice when Emily reaches out to him after their breakup.
E19 • The Solder Excursion Diversion
Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.
20m • 2015Amy is shocked at a revelation from Sheldon after she buys him a new laptop. Also, Koothrappali sells out Leonard and Wolowitz after they lie to their wives in order to attend an early screening of a movie.
E20 • The Big Bear Precipitation
Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.
18m • 2015Sheldon spills a secret of Leonard’s when the two take a weekend cabin trip with Penny and Amy. Also, when Koothrappali goes overboard with pregnancy gifts, Wolowitz and Bernadette must draw the line.
E21 • The Viewing Party Combustion
Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.
18m • 2015Everyone must choose sides when a small argument between Leonard and Sheldon erupts into a heated fight during a group get-together.
E22 • The Fermentation Bifurcation
The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group.
19m • 2015The gang goes to a wine bar and runs into Penny’s old boyfriend, Zack. Also, Bernadette gets stuck spending the evening with Sheldon when she can’t go wine tasting with the group.
E23 • The Line Substitution Solution
Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.
18m • 2015Sheldon hires Stuart to spend the day with Amy when he’d rather go to a movie screening. Also, Leonard’s mother, Beverly, comes to town and Penny struggles to make a connection with her.
E24 • The Convergence Convergence
Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town.
19m • 2015Chaos ensues when Leonard’s recently divorced parents, Alfred and Beverly, and Sheldon’s devoutly religious mother, Mary, come to town.
E1 • The Conjugal Conjecture
After Sheldon's mother and Leonard's father share an evening together, everyone deals with an awkward "morning after the night before" in the tenth season premiere.
21m • 2016After Sheldon's mother and Leonard's father share an evening together, everyone deals with an awkward "morning after the night before" in the tenth season premiere.
E2 • The Military Miniaturization
Colonel Williams, an Air Force representative from the Department of Material Command, sits down for a talk with Howard.
18m • 2016Colonel Williams, an Air Force representative from the Department of Material Command, sits down for a talk with Howard.
E3 • The Dependence Transcendence
Tensions rise when the guys struggle to complete their government project on time - and Sheldon tries an energy drink to stay awake. Meanwhile, Penny and Amy go to a geologist's "party".
19m • 2016Tensions rise when the guys struggle to complete their government project on time - and Sheldon tries an energy drink to stay awake. Meanwhile, Penny and Amy go to a geologist's "party".
E4 • The Cohabitation Experimentation
When Amy's apartment floods, she proposes a "cohabitation experiment" with Sheldon. Meanwhile, Raj learns the gender of Howard and Bernadette's baby….before they do.
19m • 2016When Amy's apartment floods, she proposes a "cohabitation experiment" with Sheldon. Meanwhile, Raj learns the gender of Howard and Bernadette's baby….before they do.
E5 • The Hot Tub Contamination
Sheldon threatens to break off their relationship when Amy refuses to adhere to his "bathroom schedule", putting their cohabitation experiment in jeopardy.
19m • 2016Sheldon threatens to break off their relationship when Amy refuses to adhere to his "bathroom schedule", putting their cohabitation experiment in jeopardy.
E6 • The Fetal Kick Catalyst
Penny learns there are fans of her performance in "Serial Ape-ist" when she and Leonard attend a Comic Con event; Amy hosts a brunch at Penny's apartment; and Wolowitz makes an impulsive purchase.
18m • 2016Penny learns there are fans of her performance in "Serial Ape-ist" when she and Leonard attend a Comic Con event; Amy hosts a brunch at Penny's apartment; and Wolowitz makes an impulsive purchase.
E7 • The Veracity Elasticity
Amy lies about repairs being made to her apartment so she can continue living with Sheldon; Leonard lets Penny decorate Sheldon's old room.
20m • 2016Amy lies about repairs being made to her apartment so she can continue living with Sheldon; Leonard lets Penny decorate Sheldon's old room.
E8 • The Brain Bowl Incubation
After a successful experiment combining their genes, Sheldon is determined to procreate with Amy. Meanwhile, Raj is embarrassed with his new date's occupation.
18m • 2016After a successful experiment combining their genes, Sheldon is determined to procreate with Amy. Meanwhile, Raj is embarrassed with his new date's occupation.
E9 • The Geology Elevation
Sheldon struggles to contain his jealousy when CalTech geologist Bert wins the MacArthur Genius Fellowship. Stephen Hawking returns for a guest appearance.
18m • 2016Sheldon struggles to contain his jealousy when CalTech geologist Bert wins the MacArthur Genius Fellowship. Stephen Hawking returns for a guest appearance.
E10 • The Property Division Collision
A battle ensues when Leonard and Sheldon argue over who will get custody of their shared belongings. Christopher Lloyd guest stars.
19m • 2016A battle ensues when Leonard and Sheldon argue over who will get custody of their shared belongings. Christopher Lloyd guest stars.
E11 • The Birthday Synchronicity
While Sheldon and Amy celebrate Amy's birthday, Howard and Bernadette welcome their new Baby Wolowitz.
19m • 2016While Sheldon and Amy celebrate Amy's birthday, Howard and Bernadette welcome their new Baby Wolowitz.
E12 • The Holiday Summation
Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas. Laurie Metcalf returns as Sheldon's mother.
20m • 2016Sheldon and Amy visit Leonard and Penny for the first time since the holidays and share details about their terrible trip to Texas. Laurie Metcalf returns as Sheldon's mother.
E13 • The Romance Recalibration
When Leonard and Penny fight, Sheldon plays the unlikely peacemaker. Meanwhile, Howard and Raj try to fix a squeaky floorboard in the baby's room
18m • 2016When Leonard and Penny fight, Sheldon plays the unlikely peacemaker. Meanwhile, Howard and Raj try to fix a squeaky floorboard in the baby's room
E14 • The Emotion Detection Automation
While Raj gets dating advice from his ex-girlfriends, Sheldon gets help reading people's feelings when he beta tests an emotion-detection invention.
19m • 2016While Raj gets dating advice from his ex-girlfriends, Sheldon gets help reading people's feelings when he beta tests an emotion-detection invention.
E15 • The Locomotion Reverberation
Leonard and Howard try to distract Sheldon by giving him tickets to a historic railway, while Penny and Amy take Bernadette out for the night, leaving Raj and Stuart with the baby.
19m • 2016Leonard and Howard try to distract Sheldon by giving him tickets to a historic railway, while Penny and Amy take Bernadette out for the night, leaving Raj and Stuart with the baby.
E16 • The Allowance Evaporation
Amy is furious when she learns Sheldon has shared intimate details of their relationship with people at the university, prompting their first fight since moving in together.
17m • 2016Amy is furious when she learns Sheldon has shared intimate details of their relationship with people at the university, prompting their first fight since moving in together.
E17 • The Comic-Con Conundrum
When Raj is cut off from his father's fortune, he appoints Sheldon in charge of his finances to help him get out of debt. Meanwhile, Penny considers joining Leonard at Comic-Con.
19m • 2016When Raj is cut off from his father's fortune, he appoints Sheldon in charge of his finances to help him get out of debt. Meanwhile, Penny considers joining Leonard at Comic-Con.
E18 • The Escape Hatch Identification
When Raj moves out of his apartment, Leonard and Penny offer him Sheldon's old room. Christine Baranski returns as Leonard's mother, Beverly.
19m • 2016When Raj moves out of his apartment, Leonard and Penny offer him Sheldon's old room. Christine Baranski returns as Leonard's mother, Beverly.
E19 • The Collaboration Fluctuation
Leonard, Penny and Raj adjust to their new living arrangement, while Sheldon takes an interest in Amy's work.
18m • 2016Leonard, Penny and Raj adjust to their new living arrangement, while Sheldon takes an interest in Amy's work.
E20 • The Recollection Dissipation
Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Howard as well as Amy on the same day. Meanwhile, Bernadette nears the end of her maternity leave.
18m • 2016Sheldon pushes himself to the limit when he collaborates on projects with Leonard and Howard as well as Amy on the same day. Meanwhile, Bernadette nears the end of her maternity leave.
E21 • The Separation Agitation
Howard and Bernadette have a hard time leaving Halley in daycare when Bernadette returns to work. Meanwhile, Bert introduces the gang to his new girlfriend, Rebecca.
19m • 2016Howard and Bernadette have a hard time leaving Halley in daycare when Bernadette returns to work. Meanwhile, Bert introduces the gang to his new girlfriend, Rebecca.
E22 • The Cognition Regeneration
Leonard isn't thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.
19m • 2016Leonard isn't thrilled when Penny considers taking a new job offered by her ex-boyfriend, Zack.
E23 • The Gyroscopic Collapse
After Leonard, Sheldon and Howard celebrate the completion of their top secret Air Force project, they're met with an unpleasant surprise.
18m • 2016After Leonard, Sheldon and Howard celebrate the completion of their top secret Air Force project, they're met with an unpleasant surprise.
E24 • The Long Distance Dissonance
On the tenth season finale, the gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki resurfaces while Amy is away at Princeton.
19m • 2016On the tenth season finale, the gang is concerned when Sheldon's former admirer, Dr. Ramona Nowitzki resurfaces while Amy is away at Princeton.
E1 • The Proposal Proposal
Amy answers Sheldon's proposal.
20m • 2017Amy answers Sheldon's proposal.
E2 • The Retraction Reaction
Leonard gives an embarrassing radio interview.
20m • 2017Leonard gives an embarrassing radio interview.
E3 • The Relaxation Integration
Amy tries to convince Sheldon he can be easy-going.
19m • 2017Amy tries to convince Sheldon he can be easy-going.
E4 • The Explosion Implosion
Leonard's mom finds a new best friend in Penny.
20m • 2017Leonard's mom finds a new best friend in Penny.
E5 • The Collaboration Contamination
Penny figures out the "secret" to Sheldon.
18m • 2017Penny figures out the "secret" to Sheldon.
E6 • The Proton Regeneration
Sheldon auditions to be the new Professor Proton.
20m • 2017Sheldon auditions to be the new Professor Proton.
E7 • The Geology Methodology
Sheldon secretly collaborates with Bert on a project.
19m • 2017Sheldon secretly collaborates with Bert on a project.
E8 • The Tesla Recoil
Sheldon goes behind Leonard and Howard's backs.
18m • 2017Sheldon goes behind Leonard and Howard's backs.
E9 • The Bitcoin Entanglement
The gang flashes back to 2010.
18m • 2017The gang flashes back to 2010.
E10 • The Confidence Erosion
Sheldon and Amy develop a system for wedding planning.
20m • 2017Sheldon and Amy develop a system for wedding planning.
E11 • The Celebration Reverberation
Sheldon plans a special themed dinner for Amy's birthday.
19m • 2017Sheldon plans a special themed dinner for Amy's birthday.
E12 • The Matrimonial Metric
Sheldon and Amy use science to choose Best Man & Maid of Honour.
19m • 2017Sheldon and Amy use science to choose Best Man & Maid of Honour.
E13 • The Solo Oscillation
Penny helps Sheldon figure out his next scientific move.
20m • 2017Penny helps Sheldon figure out his next scientific move.
E14 • The Separation Triangulation
Raj discovers he's dating a married woman.
19m • 2017Raj discovers he's dating a married woman.
E15 • The Novelization Correlation
Leonard asks his friends for feedback on his novel.
20m • 2017Leonard asks his friends for feedback on his novel.
E16 • The Neonatal Nomenclature
Bernadette gives birth with the gang's help.
18m • 2017Bernadette gives birth with the gang's help.
E17 • The Athenaeum Allocation
Barry Kripke interferes with Sheldon and Amy's wedding plans.
20m • 2017Barry Kripke interferes with Sheldon and Amy's wedding plans.
E18 • The Gates Excitation
Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company.
19m • 2017Penny gets the opportunity to host Bill Gates at work when his company wants to partner with her pharmaceutical company.
E19 • The Tenant Disassociation
Leonard runs against Sheldon for President of the Tenants Association.
20m • 2017Leonard runs against Sheldon for President of the Tenants Association.
E20 • The Reclusive Potential
Penny and Bernadette plan a bachelorette party for Amy.
20m • 2017Penny and Bernadette plan a bachelorette party for Amy.
E21 • The Comet Polarization
Penny makes an astronomical discovery.
20m • 2017Penny makes an astronomical discovery.
E22 • The Monetary Insufficiency
Sheldon goes to Vegas to win millions for science.
18m • 2017Sheldon goes to Vegas to win millions for science.
E23 • The Sibling Realignment
Sheldon visits his older brother Georgie in Texas.
19m • 2017Sheldon visits his older brother Georgie in Texas.
E24 • The Bow Tie Asymmetry
Amy's parents and Sheldon's family arrive for the wedding.
21m • 2017Amy's parents and Sheldon's family arrive for the wedding.
E1 • The Conjugal Configuration
Sheldon and Amy's honeymoon runs aground in New York.
20m • 2018Sheldon and Amy's honeymoon runs aground in New York.
E2 • The Wedding Gift Wormhole
Amy and Sheldon can't figure out their wedding gifts.
20m • 2018Amy and Sheldon can't figure out their wedding gifts.
E3 • The Procreation Calculation
Penny and Leonard's marriage is put to the test.
19m • 2018Penny and Leonard's marriage is put to the test.
E4 • The Tam Turbulence
Sheldon's childhood friend, Tam, visits.
18m • 2018Sheldon's childhood friend, Tam, visits.
E5 • The Planetarium Collision
Sheldon sabotages Amy's career.
18m • 2018Sheldon sabotages Amy's career.
E6 • The Imitation Perturbation
Howard dresses up as Sheldon for Halloween.
18m • 2018Howard dresses up as Sheldon for Halloween.
E7 • The Grant Allocation Derivation
Leonard regrets his newfound authority at work.
18m • 2018Leonard regrets his newfound authority at work.
E8 • The Consummation Deviation
Raj and Anu have trouble making things physical.
20m • 2018Raj and Anu have trouble making things physical.
E9 • The Citation Negation
Sheldon and Amy's scientific theory hits a wall.
19m • 2018Sheldon and Amy's scientific theory hits a wall.
E10 • The VCR Illumination
Sheldon seeks advice from his younger self.
20m • 2018Sheldon seeks advice from his younger self.
E11 • The Paintball Scattering
The truth comes out on the paintball field.
18m • 2018The truth comes out on the paintball field.
E12 • The Propagation Proposition
Penny's ex-boyfriend asks Leonard for a huge favour.
19m • 2018Penny's ex-boyfriend asks Leonard for a huge favour.
E13 • The Confirmation Polarization
A rival team of physicists tries to take credit for Super Asymmetry.
19m • 2018A rival team of physicists tries to take credit for Super Asymmetry.
E14 • The Meteorite Manifestation
Sheldon must choose between his friends or following the rules.
19m • 2018Sheldon must choose between his friends or following the rules.
E15 • The Donation Oscillation
Penny tries to divert Leonard's plans to be a sperm donor.
20m • 2018Penny tries to divert Leonard's plans to be a sperm donor.
E16 • The D & D Vortex
The guys try to crash Wil Wheaton's celebrity D&D game.
19m • 2018The guys try to crash Wil Wheaton's celebrity D&D game.
E17 • The Conference Valuation
Sheldon wants to experiment on Howard's kids.
19m • 2018Sheldon wants to experiment on Howard's kids.
E18 • The Laureate Accumulation
Amy and Sheldon try to win over Nobel laureates.
20m • 2018Amy and Sheldon try to win over Nobel laureates.
E19 • The Inspiration Deprivation
The weight of winning a Nobel weighs heavy on Amy.
19m • 2018The weight of winning a Nobel weighs heavy on Amy.
E20 • The Decision Reverberation
Penny encourages Leonard to stand up for himself.
18m • 2018Penny encourages Leonard to stand up for himself.
E21 • The Plagiarism Schism
Amy and Sheldon try to take the high road for the Nobel Prize.
19m • 2018Amy and Sheldon try to take the high road for the Nobel Prize.
E22 • The Maternal Conclusion
Leonard's mother is finally nice to him.
19m • 2018Leonard's mother is finally nice to him.
E23 • The Change Constant
Sheldon and Amy await big news.
19m • 2018Sheldon and Amy await big news.
E24 • The Stockholm Syndrome
In the series finale, the gang travels together into an uncharted future.
22m • 2018In the series finale, the gang travels together into an uncharted future.
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© Anghami FZ LLC 2024. All rights reserved.
© Anghami FZ LLC 2024. All rights reserved.
