The Big Bang Theory

Thursdays 8:00 PM on CBS
The big bang theory
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Leonard in a Snuggie
Watch The Big Bang Theory Season 2 Episode 23
"The Monopolar Expedition"
Original Air Date:

When Sheldon gets news he's going to the North Pole on a NSF expedition, he invites the guys as his group.

Sheldon is Angry at Stuart
Watch The Big Bang Theory Season 2 Episode 22
"The Classified Materials Turbulence"
Original Air Date:

Howard enlists the help of the boys in order to fix his space toilet. Stuart and Penny go on their second date.

Raj and a Prostitute
Watch The Big Bang Theory Season 2 Episode 21
"The Vegas Renormalization"
Original Air Date:

When Wolowitz gets dumped by Leslie, Raj and Leonard take him to Las Vegas to get over his breakup. Meanwhile, Sheldon gets locked out of the apartment and has to crash at Penny's.

Leonard, Penny and Stuart
Watch The Big Bang Theory Season 2 Episode 20
"The Hofstadter Isotope"
Original Air Date:

A friend of the guys who works at the comic book store, Stuart (Kevin Sussman) hits it off with Penny, prompting Leonard and Wolowitz to head out to ladies' night at a local bar.

Raj Talks to Alicia
Watch The Big Bang Theory Season 2 Episode 19
"The Dead Hooker Juxtaposition"
Original Air Date:

Penny gets jealous of the guys' new sexy female neighbor (Valerie Azlynn)

Leonard Plays Laser Obstacle Chess
Watch The Big Bang Theory Season 2 Episode 18
"The Work Song Nanocluster"
Original Air Date:

The boys help Penny with her new business selling Penny Blossoms.

Wolowitz and Summer Glau
Watch The Big Bang Theory Season 2 Episode 17
"The Terminator Decoupling"
Original Air Date:

On a train ride to San Francisco, Leonard, Sheldon, Wolowitz, and Raj discover that Summer Glau is on their train ride.

Wolowitz and Winkle!
Watch The Big Bang Theory Season 2 Episode 16
"The Cushion Saturation"
Original Air Date:

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

Sheldon and Mrs. Hofstadter Sing
Watch The Big Bang Theory Season 2 Episode 15
"The Maternal Capacitance"
Original Air Date:

Leonard's mother, Mrs. Hofstadter (Christine Branksi) comes into town and she ends up being exactly like Sheldon.

Leonard Uses the Board
Watch The Big Bang Theory Season 2 Episode 14
"The Financial Permeability"
Original Air Date:

Sheldon lends Penny some money which makes Leonard go and try and collect some money from her ex-boyfriend Kurt for her.

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TBBT Quotes

Penny: Here's a question-- as an alien pretending to be human, are you planning to engage in any post-prom mating rituals with Amy?
Sheldon: There are post-prom mating rituals?
Penny: Not always. Unless your date drives a van with an air mattress, then always.
Sheldon: Well, if it's part of the prom experience, then I'm open to it.
Penny: You're kidding.
Sheldon: I may be an alien, but I have urges.If Amy wants to copulate by firing her eggs into space, well, then, I will happily catch them with the reproductive sac on my upper flermin. I'm not the best at reading facial cues, but I can see that you're a little turned on.

Penny, there's only one cookie with something in the middle that solves life's problems, and that's an Oreo. Or a Nutter Butter, if you're in a pinch.

Sheldon