Was the starfish wearing boxer shorts? Because I'm pretty sure you were watching Nickelodeon.

Amy: I have potential for sexual arousal.
Sheldon: A cross we all must bear.

Penny: That's thinking ahead.
Sheldon: The alternative would be to think backwards.. and that's just remembering.

Amy: Sheldon, I am not going through menopause.
Sheldon: Are you sure? You said that with the testy bark of an old bitty.

I'd like to say I'm very happy that you're back together, and if I can figure out a way to do so and sound sincere, I will.

Even at Star Trek conventions, they only let him in if he helps set up!

Well, if it isn't Wil Wheaton, the Jar-Jar Binks of the "Star Trek" universe.

Sheldon: And here's where we are -- the runts in a large litter unlikely to ever reach the nourishing teats of Indiana Jones.
Leonard: So it's good we stopped for dinner.

I find zombies dancing in choreographed synchronicity implausible. And also it's really scary.

No, Gorn, no! That's where I sit.

I don't like the Olive Garden. They treat me like family.

If we're changing topics, I believe I have dibs with the capybara, a rodent the size of a baby hippo.

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