The Big Bang Theory

The Friendship Contraction. Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Howard tries to pick his astronaut nickname. S5, Ep15

The Vacation Solution. When Sheldon is forced to take a vacation by the university, he goes to work with Amy in her neurobiology lab. S5, Ep16

The Rothman Disintegration. When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy. S5, Ep17

The Werewolf Transformation. A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space. S5, Ep18

The Rothman Disintegration. When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy. S5, Ep17

The Werewolf Transformation. A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space. S5, Ep18

The Weekend Vortex. Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party. S5, Ep19

The Stag Convergence. Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online. S5, Ep22

The Hawking Excitation. When Wolowitz gets to work with world-renowned scientist, Stephen Hawking, Sheldon is willing to do anything to meet his hero. S5, Ep21

The Stag Convergence. Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online. S5, Ep22

The Launch Acceleration. When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad. S5, Ep23

The Countdown Reflection. When Howard and Bernadette decide they want to be married before his NASA space launch, the gang rushes to put on a wedding. S5, Ep24

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The Re-Entry Minimization. When Howard returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes. S6, Ep4

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The Extract Obliteration. Sheldon's friendship with renowned scientist Stephen Hawking is threatened by a game of 'Words with Friends.' S6, Ep6

The Launch Acceleration. When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad. S5, Ep23

The Countdown Reflection. When Howard and Bernadette decide they want to be married before his NASA space launch, the gang rushes to put on a wedding. S5, Ep24

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The Re-Entry Minimization. When Howard returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes. S6, Ep4

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The Extract Obliteration. Sheldon's friendship with renowned scientist Stephen Hawking is threatened by a game of 'Words with Friends.' S6, Ep6

The Habitation Configuration. Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton. S6, Ep7

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Habitation Configuration. Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton. S6, Ep7

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Fish Guts Displacement. Sheldon plays nursemaid to a sick Amy, while Howard attempts to bond with his father-in-law on an upcoming fishing trip. S6, Ep10

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Cooper/Kripke Inversion. Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience. S6, Ep14

The Bakersfield Expedition. Leonard's car is stolen when the guys take a road trip to a comic book convention in Bakersfield, dressed as Star Trek characters. S6, Ep13

The Cooper/Kripke Inversion. Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience. S6, Ep14

The Habitation Configuration. Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton. S6, Ep7

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Habitation Configuration. Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton. S6, Ep7

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Fish Guts Displacement. Sheldon plays nursemaid to a sick Amy, while Howard attempts to bond with his father-in-law on an upcoming fishing trip. S6, Ep10

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Cooper/Kripke Inversion. Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience. S6, Ep14

The Bakersfield Expedition. Leonard's car is stolen when the guys take a road trip to a comic book convention in Bakersfield, dressed as Star Trek characters. S6, Ep13

The Cooper/Kripke Inversion. Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience. S6, Ep14

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

Contractual Obligation Implementation. Leonard, Sheldon and Howard try to advance the cause of women in science by speaking with junior high girls about their future careers. S6, Ep18

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Closure Alternative. After one of his favourite TV shows gets cancelled too soon, Sheldon feels lost, so Amy tries to help him get over his compulsive need for closure. S6, Ep21

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

Contractual Obligation Implementation. Leonard, Sheldon and Howard try to advance the cause of women in science by speaking with junior high girls about their future careers. S6, Ep18

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Closure Alternative. After one of his favourite TV shows gets cancelled too soon, Sheldon feels lost, so Amy tries to help him get over his compulsive need for closure. S6, Ep21

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Love Spell Potential. When the girls' trip to Vegas falls through, the guys invite them to a Dungeons & Dragons date. Meanwhile, Raj and Lucy go on an awkward date. S6, Ep23

The Bon Voyage Reaction. When Leonard is offered an exciting new job opportunity overseas, Sheldon grows jealous. Raj pushes Lucy a little too far in their relationship. S6, Ep24

The Hofstadter Insufficiency. Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup. S7, Ep1

The Bon Voyage Reaction. When Leonard is offered an exciting new job opportunity overseas, Sheldon grows jealous. Raj pushes Lucy a little too far in their relationship. S6, Ep24

The Hofstadter Insufficiency. Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup. S7, Ep1

The Raiders Minimization. Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles. S7, Ep4

The Workplace Proximity. Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette. S7, Ep5

The Raiders Minimization. Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles. S7, Ep4

The Workplace Proximity. Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette. S7, Ep5

The Romance Resonance. Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette. S7, Ep6

The Friendship Contraction. Sheldon's selfish demands force Leonard to reconsider their friendship. Meanwhile, Howard tries to pick his astronaut nickname. S5, Ep15

The Vacation Solution. When Sheldon is forced to take a vacation by the university, he goes to work with Amy in her neurobiology lab. S5, Ep16

The Rothman Disintegration. When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy. S5, Ep17

The Werewolf Transformation. A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space. S5, Ep18

The Rothman Disintegration. When a corner office at the university opens, Sheldon must compete for it with his office nemesis, Barry Kripke. Penny gets an unusual gift from Amy. S5, Ep17

The Werewolf Transformation. A change in Sheldon's routine forces him to re-evaluate his entire life, when his barber is sick. Howard rethinks his decision to go into space. S5, Ep18

The Weekend Vortex. Sheldon chooses to participate in a guys-only weekend Star Wars gaming marathon rather than go with Amy to her aunt's birthday party. S5, Ep19

The Stag Convergence. Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online. S5, Ep22

The Launch Acceleration. When NASA reschedules Howard's mission and puts his wedding plans in jeopardy, he's forced to face his fears - and Bernadette's dad. S5, Ep23

The Stag Convergence. Howard's wedding plans are in jeopardy after the guys throw him a bachelor party, and details of his sexual history are leaked online. S5, Ep22

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Date Night Variable. Howard discovers that he can't escape his mother - even in space! Back on earth, meanwhile, Raj turns his existence as a third wheel into an art form. S6, Ep1

The Decoupling Fluctuation. After learning Penny is thinking about breaking up with Leonard, Sheldon tries to intervene. Howard is being picked on in space by the astronauts. S6, Ep2

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The Re-Entry Minimization. When Howard returns from space, he doesn't get the hero's welcome he expected. Meanwhile, Game Night turns into a battle of the sexes. S6, Ep4

The Holographic Excitation. The gang celebrates Halloween at Stuart's comic book store. Leonard and Penny discover a new spark in their relationship with a scientific seduction. S6, Ep5

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Habitation Configuration. Bernadette pressures Howard to move out of his mother's house. Sheldon finds himself caught in the middle of a fight between Amy and Wil Wheaton. S6, Ep7

The 43 Peculiarity. Howard and Raj try to understand why Sheldon disappears every afternoon at 2:45. Leonard and Penny wrestle with jealousy in their relationship. S6, Ep8

The Parking Spot Escalation. When the University reassigns Sheldon's unused parking spot to Howard, the ensuing turf battle affects the whole gang. S6, Ep9

The Fish Guts Displacement. Sheldon plays nursemaid to a sick Amy, while Howard attempts to bond with his father-in-law on an upcoming fishing trip. S6, Ep10

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Egg Salad Equivalency. Sheldon is accused of sexual harassment at the University and winds up dragging Leonard, Raj and Howard into the fray. S6, Ep12

The Santa Simulation. Sheldon unwillingly revisits some Christmas memories during a lively game of Dungeons and Dragons, while Raj joins the girls for ladies' night out. S6, Ep11

The Cooper/Kripke Inversion. Outraged that he's being forced to work with his university nemesis, Barry Kripke, Sheldon faces a crisis of conscience. S6, Ep14

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Spoiler Alert Segmentation. When Sheldon and Leonard fight, it affects Penny and Amy's living arrangements. Meanwhile, Raj takes care of Mrs. Wolowitz while Howard is away. S6, Ep15

The Tangible Affection Proof. While the guys try to give their significant others the perfect Valentine's Day, Raj and Stuart throw a lonely people party at the comic book store. S6, Ep16

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

Contractual Obligation Implementation. Leonard, Sheldon and Howard try to advance the cause of women in science by speaking with junior high girls about their future careers. S6, Ep18

The Closet Reconfiguration. When Howard finds a letter from his father, he's forced to confront his past. And Leonard and Penny throw a grown-up cocktail party at the apartment. S6, Ep19

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Closure Alternative. After one of his favourite TV shows gets cancelled too soon, Sheldon feels lost, so Amy tries to help him get over his compulsive need for closure. S6, Ep21

The Proton Resurgence. Leonard and Sheldon hire Professor Proton, the host of their favourite childhood TV show, to perform. Raj leaves his dog with Howard and Bernadette. S6, Ep22

The Hofstadter Insufficiency. Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup. S7, Ep1

The Bon Voyage Reaction. When Leonard is offered an exciting new job opportunity overseas, Sheldon grows jealous. Raj pushes Lucy a little too far in their relationship. S6, Ep24

The Hofstadter Insufficiency. Leonard is away at sea, so Sheldon and Penny spend time together and spill some revealing secrets. Howard comes to Raj's aid after a breakup. S7, Ep1

The Raiders Minimization. Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles. S7, Ep4

The Workplace Proximity. Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette. S7, Ep5

The Raiders Minimization. Amy ruins one of Sheldon's favourite films. Leonard discovers how to get Penny to do his bidding. Raj and Stuart get creative with dating profiles. S7, Ep4

The Workplace Proximity. Amy takes a job at Sheldon's university, putting their relationship to the test. Howard ends up sleeping on Raj's couch after a fight with Bernadette. S7, Ep5

The Romance Resonance. Sheldon fears his major scientific breakthrough may haunt him for the rest of his career. Howard makes a grand romantic gesture to Bernadette. S7, Ep6