Amy vs. Penny

Amy vs. Penny

Really, Penny?!? Amy has the question you'd expect her to have in this scene from the season five premiere.
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New Roomies

New Roomies

Cheers to a new set up. Raj moves in with Sheldon on the season finale of The Big Bang Theory.
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Hi, Couple!

Hi, Couple!

Can Leonard be friends with Penny while dating Priya? It might be a challenge.
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The Zazzy Substitution Scene

The Zazzy Substitution Scene

Who needs human companionship?!? Not Sheldon, this character hopes, on the episode titled "The Zazzy Substitution."
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Awkward Date

Awkward Date

Sheldon requires a chaperon on his first date when season four of The Big Bang Theory kicks off. Penny is chosen for the job.
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Penny Bowling

Penny Bowling

Poor Penny attempts to go bowling as Raj and Wolowitz watch on and drool.
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A Trapped Sheldon

A Trapped Sheldon

Penny and Leonard come outside to see Sheldon trapped by a net from the security system they installed.
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Leonard and Penny Argue

Leonard and Penny Argue

As usual, Leonard and Penny get into an argument. This time? About psychics.
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Decorating The Tree

Decorating The Tree

Sheldon helps decorate the tree and wants to add the bust of Sir Isaac Newton, which he argues is more Christmasy than Jesus.
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Penny and Beverly Drink

Penny and Beverly Drink

Penny and Leonard's mom, Beverly (Christine Baranski) go for some shots of tequila at the Cheesecake Factory.
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Sheldon Teaches Penny

Sheldon Teaches Penny

Penny comes to Sheldon for help to better understand Leonard's work and here he is training her.
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Sheldon Helps Penny

Sheldon Helps Penny

We love any scene involving Sheldon and Penny together and here he is taking her to the hospital when she's injured.
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TBBT Quotes

What do Sheldon Cooper and the black hole have in common? They both suck.

Professor Hawking

Raj: Okay, here's another one: if a zombie bites a vampire, and the vampire bites a human, does the human become a vampire or a zombie? Or, a zompire?