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Leonard and Sheldon are brilliant physicists - geniuses in the laboratory, but socially challenged everywhere else. Enter beautiful, street-smart neighbor, Penny, who aims to teach them a thing or two about life. Despite their on-again, off-again relationship in the past, Leonard believes he's found true love with Penny. Even Sheldon has found a female companion, entering into a "Relationship Agreement" with neurobiologist Amy Farrah Fowler. In their free time, Leonard and Sheldon continue to enjoy frequent trips to the comic book store and fantasy role-playing games with their ever-expanding universe of friends, including fellow scientists Koothrappali, Wolowitz and Wolowitz's adorable microbiologist wife, Bernadette. (source: www.cbs.com)

Genres: Comedy
Station: CBS (US)
Rating: 9.25/10 from 220 users
Status: Ended
Start: 2007-09-24

The Big Bang Theory Season 2 Air Dates

S02E01 - The Bad Fish Paradigm Air Date: 23 September 2008 00:00 -

After her first date with Leonard goes awry, Penny finds an unwilling confidant in Leonard's anti-social roommate, Sheldon.

S02E02 - The Codpiece Topology Air Date: 30 September 2008 00:00 -

When Leonard sees Penny with a handsome new guy, he enters into a rebound relationship with Sheldon's nemesis, Leslie Winkle.

S02E03 - The Barbarian Sublimation Air Date: 07 October 2008 00:00 -

Sorry, but right now we don't have any sources for this episode.

Sheldon creates a monster when he introduces Penny to the world of online gaming.

S02E04 - The Griffin Equivalency Air Date: 14 October 2008 00:00 -

Raj, newly famous because of an article in a magazine, gets a big head and makes a disastrous play for Leonard's crush, Penny.

S02E05 - The Euclid Alternative Air Date: 21 October 2008 00:00 -

Leonard and his friends stage an intervention to make Sheldon confront his longstanding fear of driving.

S02E06 - The Cooper-Nowitzki Theorem Air Date: 04 November 2008 01:00 -

Young grad student's attraction to Sheldon confuses everyone, including Sheldon himself.

S02E07 - The Panty PiƱata Polarization Air Date: 11 November 2008 01:00 -

Penny vows to get revenge on Sheldon when he bans her from the apartment for a series of petty infractions.

S02E08 - The Lizard-Spock Expansion Air Date: 18 November 2008 01:00 -

Wolowitz thinks he's found the love of his life, until she meets Leonard.

S02E09 - The White Asparagus Triangulation Air Date: 25 November 2008 01:00 -

Sheldon can barely contain his joy when Leonard starts dating a woman who meets Sheldon's exacting standards.

S02E10 - The Vartabedian Conundrum Air Date: 09 December 2008 01:00 -

When Leonard's relationship with a new woman starts moving too fast, he goes to Penny for advice.

S02E11 - The Bath Item Gift Hypothesis Air Date: 16 December 2008 01:00 -

Christmas is a source of stress for Leonard - whose handsome colleague starts dating Penny - and his friends, who are being tormented by Sheldon's obsession with gift-giving etiquette.

S02E12 - The Killer Robot Instability Air Date: 13 January 2009 01:00 -

When Penny's comment about Wolowitz's love life sends him into a depressed stupor, his friends lose their most important team-mate in an upcoming fighting robot competition.

S02E13 - The Friendship Algorithm Air Date: 20 January 2009 01:00 -

Socially awkward Sheldon develops a scientific procedure for making friends.

S02E14 - The Financial Permeability Air Date: 03 February 2009 01:00 -

Sheldon's "simple" solution to Penny's financial problem leads to a confrontation between Leonard and Penny's hulking ex-boyfriend, Kurt.

S02E15 - The Maternal Capacitance Air Date: 10 February 2009 02:30 -

Disastrous visit from Mrs. Hofstadter brings Leonard and Penny closer together.

S02E16 - The Cushion Saturation Air Date: 03 March 2009 01:00 -

Paintball game leads to a fight between Penny and Sheldon, and romance for Wolowitz and Leslie.

S02E17 - The Terminator Decoupling Air Date: 10 March 2009 00:00 -

Train trip to San Francisco takes a major detour when Leonard, Sheldon, Wolowitz and Raj discover that beautiful sci-fi actress Summer Glau is onboard.

S02E18 - The Work Song Nanocluster Air Date: 17 March 2009 00:00 -

Penny's home hair products business becomes a complete nightmare when a caffeine-addled Sheldon takes over.

S02E19 - The Dead Hooker Juxtaposition Air Date: 31 March 2009 00:00 -

Penny develops a rivalry with a sexy female neighbor who threatens to become "The New Penny" in the building.

S02E20 - The Hofstadter Isotope Air Date: 14 April 2009 00:00 -

While a fellow comic book-loving pal of the guys romances Penny, Leonard and Wolowitz venture out into the world of "Ladies' Night" at a local bar.

S02E21 - The Vegas Renormalization Air Date: 28 April 2009 00:00 -

Leonard and Koothrappali take a heartbroken Wolowitz to Las Vegas, leaving Sheldon locked out of his apartment and forced to bunk with Penny.

S02E22 - The Classified Materials Turbulence Air Date: 05 May 2009 00:00 -

Things begin to look up for Leonard when Penny makes a surprising revelation on her second date with Stuart. Meanwhile, Wolowitz enlists his friends' help when he discovers a critical design flaw in his project for NASA.

S02E23 - The Monopolar Expedition Air Date: 12 May 2009 00:00 -

Penny is conflicted when Leonard and his friends decide to spend the summer working - at the North Pole.

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