Sheldon: Well, it should be a scientist I respect. You know, someone with a pleasing voice and symmetrical facial features.
Bernadette: Is he talking about himself?
Penny: If he's talking, he's talking about himself.

Raj: [to Amy] If you were having Sheldon's baby, would you really want him in the room?
Penny: Yeah, if he's in the room when they're making the baby, I'll give you $10.

Sheldon: Woman, you are playing with forces beyond your ken.
Penny: Yeah, well your Ken can kiss my Barbie.

Leonard: If I take it off, Sheldon wins.
Penny: Sweetie, every night you don't kill him in his sleep, he wins.

Sheldon: Until next week, this is Professor Proton saying, 01000010 01111001 01100101. That's "Bye" in ASCII binary, or good-binary.

Amy: Well, what was wrong with it? You know, did you find it borderline psychotic? I mean, I liked that about it, but you guys discuss.

Sheldon: Some things shouldn't be rebooted. Some things were perfect the way they were. Like the walled city of York, it was a delight. But New York? Blech.