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The Big Bang Theory

The Big Bang Theory is a comedy about two physicists Leonard Hofstadter and Sheldon Cooper who live and work together in Pasadena, California. They live a comfortable geeky existence until attractive wannabe actress Penny moves in across the hall. CBS 2007-???

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Viewer
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Season 5

# Episode Overview Score Viewer score Podcast
1 The Skank Reflex Analysis Raj hopes to continue his relationship with Penny ...
Raj hopes to continue his relationship with Penny while she wants to put the whole thing behind her. Leonard is mad at Raj and Howard joins in when he hears about Raj's interest in Bernadette. Sheldon is more concerned with an upcoming paint ball game.
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2 The Infestation Hypothesis Leonard and Priya are continuing their relationshi...
Leonard and Priya are continuing their relationship but at a distance. Howard encourages Leonard to have sex over Skype but it's not that easy to achieve. Meanwhile Penny gets a new chair that Sheldon is fond of. At least he is until she tells him that she found it on the street. He is horrified by the potential germs it might contain and enlists Amy to help him get rid of it.
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3 The Pulled Groin Extrapolation Amy invites Leonard to a wedding and they have a s...
Amy invites Leonard to a wedding and they have a surprisingly good time. Howard suggests that Bernadette move in with him and his mother for a weekend as a trial for something more permanent. Sheldon buys a toy train set.
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4 The Wiggly Finger Catalyst Raj's loneliness concerns Penny and so she sets hi...
Raj's loneliness concerns Penny and so she sets him up with a girl from her spin class. Emily is deaf and so Raj is able to talk but he does need Howard on his dates to translate at first. Meanwhile Sheldon decides to free up his brain by letting a pair of dice make his trivial decisions for him. Soon we learn that Raj's family are richer than anyone knew and Emily is getting him to buy her lots of things.
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5 The Russian Rocket Reaction Howard announces that he will be going up to the i...
Howard announces that he will be going up to the international space station and everyone is excited. Everyone except Bernadette who is worried that he won't come back. She goes behind his back and tells his mother who forbids him from going. Meanwhile Leonard accepts an invitation to a party at Will Wheaton's house which Sheldon sees as a betrayal.
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6 The Rhinitis Revelation Sheldon's mother comes to visit and he has planned...
Sheldon's mother comes to visit and he has planned activities where she can either look after him or be proud of him. She feels he has outgrown those needs and would rather see the sights. She takes an interest in the gang and their various problems.
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7 The Good Guy Fluctuation Howard, Raj and Leonard play a Halloween prank tha...
Howard, Raj and Leonard play a Halloween prank that scares Sheldon badly. He plots his revenge but they keep foiling his attempts. Leonard meets a cute girl, Alice, and is tempted to cheat on Priya with her. He can't go through with it though and is shocked to learn that Priya has already cheated on him.
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8 The Isolation Permutation Amy is hurt when Penny and Bernadette go wedding d...
Amy is hurt when Penny and Bernadette go wedding dress shopping without her. She asks Sheldon to make her feel better and he settles for a cuddle. The guys tell Penny and Bernadette how Amy is feeling and they try to make it up to her.
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9 The Ornithophobia Diffusion Sheldon's fear of birds is tested when a Blue Jay ...
Sheldon's fear of birds is tested when a Blue Jay flies into the apartment. Penny suggests Leonard go to the movies with her and he begins to enjoy the experience more now that they aren't dating.
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10 The Flaming Spittoon Acquisition Stuart checks with Sheldon before asking Amy out. ...
Stuart checks with Sheldon before asking Amy out. Sheldon says he doesn't mind but clearly does. It bothers him so much that he interrupts their second date and asks her out. Meanwhile the guys all get hooked on a new edition of their fantasy card game.
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11 The Speckerman Recurrence One of Leonard's high school bullies, Jimmy Spcker...
One of Leonard's high school bullies, Jimmy Spckerman, gets in touch and wants to meet. Leonard makes a list of all the mean things Jimmy did to him and heads off to confront him. The guys go with him and Sheldon stands up for Leonard. Jimmy gets drunk and comes round to apologise. Meanwhile Bernadette and Amy reminisce about their own high school experience and realise that Penny was a bully in high school. They encourage her to do something for the needy to make herself feel better.
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12 The Shiny Trinket Maneuver Sheldon dismisses Amy's achievements on a date and...
Sheldon dismisses Amy's achievements on a date and she gets upset. Leonard and Penny guide him through the process of buying her some jewellery. Meanwhile Howard is putting on a magic show for his cousin's birthday and asks Bernadette to be his assistant. She agrees but the experience doesn't change her opinion about children.
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13 The Recombination Hypothesis Leonard spontaneously asks Penny out on a date. It...
Leonard spontaneously asks Penny out on a date. It doesn't go well but they sleep together anyway. He suggests that they keep their relationship a secret and see how it works before telling anyone.
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14 The Beta Test Initiation Leonard suggests to Penny that they test their new...
Leonard suggests to Penny that they test their new relationship and report bugs when they find them. She agrees but doesn't appreciate his list of critiques. Meanwhile Raj's new phone has voice recognition software called Siri. He begins to bond with "her" in a way that makes his friends uncomfortable.
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15 The Friendship Contraction Sheldon wakes Leonard in the middle of the night f...
Sheldon wakes Leonard in the middle of the night for an emergency preparedness drill. The next day Leonard opts out of the Roommate Agreement in frustration. Sheldon is lost without him and can't do any of his chores.
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16 The Vacation Solution Sheldon is forced to take some vacation against hi...
Sheldon is forced to take some vacation against his will. He decides to spend it in Amy's lab but is annoyed when she asks him to do simple tasks. Bernadette's family want Howard to sign a pre-nuptial agreement.
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17 The Rothman Disintegration Another theoretical physicist Professor Rothman re...
Another theoretical physicist Professor Rothman retires and both Sheldon and Kripke want his office. Unsuccessful negotiation leads to a sporting contest which Sheldon wins. Soon however he discovers that the office is not all he thought it would be. Meanwhile Amy buys Penny a huge portrait of the two of them. Penny hates it but can't bring herself to hurt Amy's feelings.
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18 The Werewolf Transformation Howard heads off for his NASA training and finds i...
Howard heads off for his NASA training and finds it all pretty tough. Sheldon's regular barber is sick and he refuses to let anyone else cut his hair. He begins to believe that the order he has brought to his life is meaningless.
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19 The Weekend Vortex Raj suggests that the guys spend the weekend playi...
Raj suggests that the guys spend the weekend playing a Star Wars video game. They all agree but Amy reminds Sheldon that he has already agreed to go to her Aunt's birthday party. He tries everything he can think of to get out of it and finally she lets him. She is miserable though and Penny comforts her. Bernadette joins the boys gaming much to Raj's displeasure.
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20 The Transporter Malfunction Raj asks his parents to set him up with a woman. H...
Raj asks his parents to set him up with a woman. He is excited to meet Lakshmi and things go well until she reveals that she is gay. Penny thanks Leonard and Sheldon for all the free meals by buying them collectable Star Trek transporters. They insist on keeping them in mint condition until the doll of Spock visits Sheldon in a dream.
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21 The Hawking Excitation Stephen Hawking comes to Caltech and Howard is ass...
Stephen Hawking comes to Caltech and Howard is assigned to look after him. Sheldon begs to meet him but Howard decides to make him earn it. He puts Sheldon through various humiliating tasks before finally letting him meet the great man.
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22 The Stag Convergence Howard’s bachelor party approaches and there are...
Howard’s bachelor party approaches and there are to be no strippers. There are however plenty of stories about Howard’s less than glorious past. Will Wheaton puts the video online and Bernadette is shocked.
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23 The Launch Acceleration Howard is thrilled to hear that NASA have called o...
Howard is thrilled to hear that NASA have called off his mission and he won’t have to go into space. He keeps it quiet though. Amy tries to get Sheldon to have feelings for her by using his favourite things to win him over. Leonard and Penny sleep together and he proposes in the heat of the moment. NASA call to say the mission is back on.
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24 The Countdown Reflection Howard is preparing to take off into space and thi...
Howard is preparing to take off into space and thinks back on the past two days. He and Bernadette decided to get officially married before his mission. So they went to city hall but weren’t able to get to registered in time. Raj organises an impromptu wedding on the roof of the guys’ building. Sheldon, Amy, Leonard, Penny and Raj all get certified and preside.
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