It's a romantic evening for two on the 100th episode of The Big Bang Theory. We're very jealous of Leonard.
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Leonard needs some advice in this Big Bang Theory scene. He has come face to face with his high school bully.
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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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Leonard confronts Penny in this scene from the season five premiere of The Big Bang Theory. She sure finds something funny!
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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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This is awkward for everyone. Raj and Penny stand in front of the boys on the fifth season premiere.
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We all know what happened between Penny and Raj on the season four finale. Here they are on the ssason five premiere.
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Amy has so many questions for Penny on the season five premiere. They are all based on sleeping with Raj.
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Really, Penny?!? Amy has the question you'd expect her to have in this scene from the season five premiere.
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Cheers to a new set up. Raj moves in with Sheldon on the season finale of The Big Bang Theory.
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Can Leonard be friends with Penny while dating Priya? It might be a challenge.
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Who needs human companionship?!? Not Sheldon, this character hopes, on the episode titled "The Zazzy Substitution."
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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.

Sheldon: Why do you have the Chinese character for "soup" tattooed on your right buttock?
Penny: It's not "soup," it's "courage."
Sheldon: No it isn't. But I suppose it does take courage to demonstrate that kind of commitment to soup.
Penny: How'd you see it? You said you wouldn't look.
Sheldon: Sorry. As I told you, the hero always peeks.