The Big Bang Theory >> Season 2
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90%2x23 | The Monopolar Expedition
May 12, 2009, 02:00AMThe guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.
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90%2x22 | The Classified Materials Turbulence
May 05, 2009, 02:00AMPenny'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.
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80%2x21 | The Vegas Renormalization
April 28, 2009, 02:00AMLeonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.
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80%2x20 | The Hofstadter Isotope
April 14, 2009, 02:00AMA fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.
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80%2x19 | The Dead Hooker Juxtaposition
March 31, 2009, 02:00AMPenny squares off with a new beautiful female neighbor who may become the building's "new Penny."
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80%2x18 | The Work Song Nanocluster
March 17, 2009, 01:00AMPenny's home business turns into a complete nightmare when Sheldon takes over.
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80%2x17 | The Terminator Decoupling
March 10, 2009, 01:00AMLeonard, 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.
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90%2x15 | The Maternal Capacitance
February 10, 2009, 02:00AMLeonard and Penny are drawn together after a disastrous visit from Leonard's mother.
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80%2x14 | The Financial Permeability
February 03, 2009, 02:00AMSheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.
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80%2x13 | The Friendship Algorithm
January 20, 2009, 02:00AMSheldon creates a scientific procedure for making friends.
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80%2x12 | The Killer Robot Instability
January 13, 2009, 02:00AMPenny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for.
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90%2x11 | The Bath Item Gift Hypothesis
December 16, 2008, 02:00AMPenny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.
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80%2x10 | The Vartabedian Conundrum
December 09, 2008, 02:00AMLeonard asks Penny for advice when his new relationship starts moving too fast.
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80%2x09 | The White Asparagus Triangulation
November 25, 2008, 02:00AMSheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.
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80%2x08 | The Lizard-Spock Expansion
November 18, 2008, 02:00AMLeonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.
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90%2x07 | The Panty Piñata Polarization
November 11, 2008, 02:00AMWhen Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.
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80%2x06 | The Cooper-Nowitzki Theorem
November 04, 2008, 02:00AMSheldon and the gang are confused when a young grad student is attracted to him.
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80%2x05 | The Euclid Alternative
October 21, 2008, 02:00AMLeonard and his friends stage an intervention to force Sheldon to face his fear of driving.
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80%2x04 | The Griffin Equivalency
October 14, 2008, 02:00AMRaj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.
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90%2x03 | The Barbarian Sublimation
October 07, 2008, 02:00AMSheldon creates a monster when he introduces Penny to online gaming.
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80%2x02 | The Codpiece Topology
September 30, 2008, 02:00AMA jealous Leonard reacts to Penny's new guy by rebounding with Leslie.
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80%2x01 | The Bad Fish Paradigm
September 23, 2008, 02:00AMPenny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.