Sheldon's listens to Howard while at work behind his computer.
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Penny surprises both Leonard and Sheldon with her comment.
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Penny and Leonard chat in front of the still-broken elevator.
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Penny talks to Leonard about an embarrassing movie role she's offered.
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It looks like Raj is pleading his case to Amy. Is she able to help him?
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Raj talks to Amy about his predicament at her lab.
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Amy looks at a text message with Raj in her lab after helping him.
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Sheldon's upset with Howard at a takeout dinner in the apartment.
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TBBT Quotes

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

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.