This is awkward for Sheldon, as Amy gets asked out by Stuart right in front of him.
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Can Leonard and Penny hang out alone? That's their goal in this Big Bang Theory scene.
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Amy is unhappy on the episode "The Isolation Permutation." That's because she is left out of wedding dress shopping.
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Laurie Metcalf is seen here as Sheldon's mom. She is rather popular within the group.
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Yikes! Sheldon reacts to the scariest balloon ever in this Big Bang Theory still.
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Wil Wheaton is back! And he's hosting a party at his house here.
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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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You're looking at a photo from "The Pulled Groin Extrapolation." Sheldon and Leonard have a lot to discuss.
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TBBT Quotes

Sheldon: Are you still mad about the sperm bank?
Leonard: No!
Sheldon: Do you want to hear an interesting thing about stairs?
Leonard: Not really.
Sheldon: If the height of a single step is off by as little as two millimeters most people will trip.
Leonard: I don't care—two millimeters?! That doesn't seem right.
Sheldon: No, it's true! I did a series of experiments when I was twelve; my father broke his clavicle.

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