The Big Bang Theory

Season 2 2008 - 2009
TV-14

  • 2008-09-23T00:00:00Z on CBS
  • 22m
  • 7h 58m (23 episodes)
  • United States
  • English
  • Comedy
This season, Leonard gets a girl. So does Sheldon. Howard drives the Mars Rover into a ditch. Raj woos a terminator. Gorgeous girl-next-door Penny falls under the spell of Age of Conan. And super-smart, ueberconfident Leslie Winkler reduces mere men to spineless jellyfish.

23 episodes

Season Premiere

2008-09-23T00:00:00Z

2x01 The Bad Fish Paradigm

Season Premiere

2x01 The Bad Fish Paradigm

  • 2008-09-23T00:00:00Z22m

Penny's first date with Leonard goes awry; Penny finds Sheldon to be an unwilling confidant.

2008-09-30T00:00:00Z

2x02 The Codpiece Topology

2x02 The Codpiece Topology

  • 2008-09-30T00:00:00Z21m

A jealous Leonard reacts to Penny's new guy by rebounding with Leslie.

2008-10-07T00:00:00Z

2x03 The Barbarian Sublimation

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

2008-10-14T00:00:00Z

2x04 The Griffin Equivalency

Raj gets an inflated ego and makes a play for Penny after being referenced in a magazine article.

2008-10-21T00:00:00Z

2x05 The Euclid Alternative

Leonard and his friends stage an intervention to force Sheldon to face his fear of driving.

Sheldon and the gang are confused when a young grad student is attracted to him.

When Sheldon bans Penny from the apartment for numerous minor infractions, she decides to retaliate.

Leonard inadvertently steals away the new woman Wolowitz thinks is the love of his life.

Sheldon is thrilled when Leonard starts dating a woman who meets Sheldon's stringent standards.

2008-12-09T01:00:00Z

2x10 The Vartabedian Conundrum

Leonard asks Penny for advice when his new relationship starts moving too fast.

Mid Season Finale

2008-12-16T01:00:00Z

2x11 The Bath Item Gift Hypothesis

Mid Season Finale

2x11 The Bath Item Gift Hypothesis

  • 2008-12-16T01:00:00Z21m

Penny starts dating Leonard's handsome colleague; Leonard and his friends are tortured by Sheldon's obsession with gift-giving etiquette.

Penny'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.

2009-01-20T01:00:00Z

2x13 The Friendship Algorithm

Sheldon creates a scientific procedure for making friends.

Sheldon's solution to Penny's financial difficulty leads to a confrontation between Leonard and Penny's ex-boyfriend.

2009-02-10T01:00:00Z

2x15 The Maternal Capacitance

Leonard and Penny are drawn together after a disastrous visit from Leonard's mother.

2009-03-03T01:00:00Z

2x16 The Cushion Saturation

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

2009-03-10T00:00:00Z

2x17 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.

2009-03-17T00:00:00Z

2x18 The Work Song Nanocluster

Penny's home business turns into a complete nightmare when Sheldon takes over.

Penny squares off with a new beautiful female neighbor who may become the building's "new Penny."

2009-04-14T00:00:00Z

2x20 The Hofstadter Isotope

A fellow comic book enthusiast's hitting on Penny leads to Leonard and Howard going to a bar's Ladies' Night.

2009-04-28T00:00:00Z

2x21 The Vegas Renormalization

Leonard and Koothrappali escort a heartbroken Wolowitz to Las Vegas, and Sheldon becomes locked out of his apartment and must stay with Penny.

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.

Season Finale

2009-05-12T00:00:00Z

2x23 The Monopolar Expedition

Season Finale

2x23 The Monopolar Expedition

  • 2009-05-12T00:00:00Z21m

The guys' plan to work over the summer at the North Pole makes Penny revaluate her feelings for Leonard.

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