The Big Bang Theory Episodes

2007, TV Show

The Big Bang Theory Season 2 episodes

The Monopolar Expedition Season 2, Episode 23

In the second-season finale, Leonard gets ready for a three-month long science trip, and he and Penny come to terms with their feelings for each other. read more

The Big Bang Theory Episode Recap: "The Classified Materials Turbulence" Season 2, Episode 22

While on a date with Stuart, Penny makes an unexpected discovery regarding Leonard.  Meanwhile, Wolowitz ask his friends' help on his NASA project when he uncovers a design flaw.
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The Big Bang Theory Episode Discussion: "The Vegas Renormalization" Season 2, Episode 21

In this episode of The Big Bang Theory, Leonard and Raj take Howard to Las Vegas to cheer him up after his breakup with Leslie. There, they meet a prostitute (Jodi Lyn O'Keefe), who Leonard and Raj hire to get Howard out of his slump. Meanwhile, Sheldon and Penny have a sleepover at Penny's place when Sheldon locks himself out of his apartment.
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The Big Bang Theory Episode Recap: "The Hofstadter Isotope" Season 2, Episode 20

This week Penny finds romance in a very unlikely place. Meanwhile, Leonard and Howard search for women at a bar during ladies' night.
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The Big Bang Theory Episode Recap: "The Dead Hooker Juxtaposition" Season 2, Episode 19

This week, an attractive new tenant moves into the apartment above Sheldon and Leonard. Although the guys love the fact that there is a new girl living above them, Penny isn't too fond of this.
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The Big Bang Theory Episode Recap: "The Work Song Nanocluster" Season 2, Episode 18

This week Penny started her own business from home in order to make some extra cash, but she soon realizes that not everything is as easy as it seems... even with the help from the guys.
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The Big Bang Theory Episode Recap: "The Terminator Decoupling" Season 2, Episode 17

While on a train to San Francisco, the guys attempt to talk to actress Summer Glau. Meanwhile, Sheldon forgets his flash drive and needs Penny's assistance.

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The Big Bang Theory Episode Discussion: "The Cushion Saturation" Season 2, Episode 16

Due to inclement weather conditions on the East Coast and a cable outage, Ryan Myxter was unable to review this week's episode of The Big Bang Theory. However, please use this posting to discuss the Wolowitz-Leslie hookup, Penny and Leonard's failed sofa-cushion cover-up, and everything else. read more

The Big Bang Theory Episode Recap: "The Maternal Capacitance" Season 2, Episode 15

After a dreadful visit from his mother, Leonard turns to Penny and tequila for comfort.
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The Big Bang Theory Episode Recap: "The Financial Permeability" Season 2, Episode 14

This week, Sheldon lends money to Penny in order to help her out with bills, but this leads to a confrontation between Leonard and Penny's ex-boyfriend, Kurt.
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The Big Bang Theory Episode Recap: "The Friendship Algorithm" Season 2, Episode 13

Friendship doesn't come easily to Sheldon, and this week's episode is no exception, as Sheldon struggles to befriend a co-worker in order to gain access to his computer.

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The Killer Robot Instability Season 2, Episode 12

Penny wounds Wolowitz with a comment about his love life, prompting him to abandon friends who need him for a fighting-robot contest. Barry Kripke: John Ross Bowie. read more

The Bath Item Gift Hypothesis Season 2, Episode 11

Christmas brings no tidings of comfort and joy to Leonard, whose colleague starts dating Penny. Meanwhile, Sheldon drives everyone crazy over his adherence to gift-giving etiquette. read more

The Vartabedian Conundrum Season 2, Episode 10

Leonard's relationship with Stephanie is moving too fast for him, so he runs to Penny for advice. Stephanie: Sara Rue. read more

The White Asparagus Triangulation Season 2, Episode 9

Sheldon is ecstatic when Leonard begins dating Stephanie (Sara Rue), who meets all of Sheldon's seemingly impossible standards. read more

The Lizard-Spock Expansion Season 2, Episode 8

A smitten Wolowitz thinks he's found his soul mate---until the woman (Sara Rue) meets Leonard. read more

The Panty Piñata Polarization Season 2, Episode 7

It's an all-out war between Penny and Sheldon when he bans her from the apartment for what she thinks are petty infractions. read more

The Cooper-Nowitzki Theorem Season 2, Episode 6

The gang is puzzled by a young grad student's attraction to Sheldon. Ramona: Riki Lindhome. Kathy: Emily Happe. read more

The Euclid Alternative Season 2, Episode 5

The friends band together to help Sheldon face his fear of driving. Octavia: Octavia Spencer. Lourdes: Livia Trevino. read more

The Griffin Equivalency Season 2, Episode 4

Raj gets an ego boost after winning some fame from a magazine article and risks his friendship with Leonard by trying to win over Penny. read more

The Barbarian Sublimation Season 2, Episode 3

Sheldon shows Penny the joys of online gaming, creating an addict in the process. Gablehauser: Mark Harelik. Blaine: Tyler Olson. Tom: Mark Hames. read more

The Codpiece Topology Season 2, Episode 2

A jealous Leonard reacts to Penny's new guy by rebounding with Leslie (Sara Gilbert). Eric: Travis Schuldt. read more

The Bad Fish Paradigm Season 2, Episode 1

In the second-season opener, Penny surprisingly turns to Sheldon as a confidant after her disastrous first date with Leonard. Mrs. Wolowitz: Carol Ann Susi. read more

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Premiered: September 24, 2007, on CBS
Rating: TV-PG
User Rating: (8,813 ratings)
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Premise: Two nerdy physicists share an apartment and an unlikely friendship with their beautiful neighbor with whom one of them is infatuated. Like the universe after the big bang, the show's popularity expanded, thanks to breakout star Jim Parsons, along with the chemistry among the friends and the developing romance between Leonard and Penny. The addition of Melissa Rauch and Mayim Bialik in later seasons also enhanced the stories and relationships of the leads.

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