The Junior High Presentation

The Junior High Presentation

Sheldon, Howard, and Leonard give a presentation about careers in science to a group of girls in junior high on The Big Bang Theory. "The Contractual Obligation Implementation" is the 18th episode of the shows sixth season.
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Following Sheldon

Following Sheldon

Howard and Raj make it their mission to figure out where Sheldon is headed on The Big Bang Theory. "The 43rd Peculiarity" is the eighth episode of the show's sixth season.
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A Halloween Smurf

A Halloween Smurf

Wolowitz and Bernadette celebrate Halloween by dressing up as Smurfs on The Big Bang Theory. "Holographic Excitation" is the fifth episode of the show's sixth season.
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Wolowitz in Space

Wolowitz in Space

Wolowitz is caught in an argument between his mother and Bernadette when The Big Bang Theory kicks off Season 6.
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Howard Must Reschedule

Howard Must Reschedule

Howard finds out he must reschedule his wedding on this episode of The Big Band Theory. "The Launch Acceleration" is the 23rd installment of the show's 5th season.
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The Big Bang Theory Boys

The Big Bang Theory Boys

The men of The Big Bang Theory do their thing in this shot from the sitcom. It's courtesy of the episode "The Shiny Trinket Maneuver."
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The Men of The Big Bang Theory

The Men of The Big Bang Theory

The boys are concerned about Raj here, but all we be okay. He meets a girl he can actually talk to on "The Wiggly Finger Catalyst."
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The Entire Gang!

The Entire Gang!

The gang is all here. And we mean everyone! Check out this scene from the fifth season premiere of The Big Bang Theory.
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Big Bang Theory Premiere Scene

Big Bang Theory Premiere Scene

This is awkward for everyone. Raj and Penny stand in front of the boys on the fifth season premiere.
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Howard and Bernadette

Howard and Bernadette

Howard and Bernadette are seen here during a scene fromThe Big Bang Theory. The photo is courtesy of the episode "The Herb Garden Germination."
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Nerds on a Mission

Nerds on a Mission

The men have a mission on the episode "The Zarnecki Incursion." They must find the person who hacked into Sheldon's online game account.
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Big Bang Guest Stars

Big Bang Guest Stars

That's Katee Sackhoff and that's George Takei. Both guest star as themselves on the episode "The Hot Troll Deviation."
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TBBT Quotes

Penny: Hey, Sheldon, did you change your Wi-Fi password again?
Sheldon: Yes, it's "Penny, get your own Wi-Fi." No spaces.

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.