Raj: Oh, hey, Bernadette, the swing comes with two different mobiles. The giraffes are pretty cute, what do you think?
Bernadette: Great, go with the giraffes.
Stuart: Although the high contrast of zebra stripes might provide better stimulus for a developing baby.
Bernadette: Yeah, you're probably right, go with the zebras.
Stuart: Good choice, boss.
Raj: At least my nose is naturally brown.

Raj: Oh man, first monster I see I'm gonna sneak up behind him, whip out my wand and shoot my magic all over his ass!
Stuart: Do you hear yourself when you say these things?

Raj: Amy, good luck getting these guys excited about a dinner with a theme. I gave up when no one cared about my Tom Hanks-Giving.

Penny: What do you mean new roommate? What happened to Leonard?
Sheldon: The same thing that happened to Homo Erectus. He was replaced by a superior species.
Raj: I'm the new homo in town.

Sheldon: If it's like your 3-D chess game, then you're out of your length, width and depth. Amy, get the Neosporin, somebody just got burned.

Leonard: Sheldon, I know what you did, now change the password back.
Sheldon: Well, powder me in sugar and call me a donut, if it isn't Leonard Hofstadter.

Sheldon: It's not my fault I'm bad at sharing; I skipped kindergarten.