Howard: Now, inside, we've got motion detectors, infrared sensors, and cameras connected to a server running state-of-the-art facial recognition software.
Leonard: Where did you get all this stuff?
Howard: I got a buddy over at the Department of Defense.
Leonard: He just gave it to you?
Howard: I'm sure he would have if I had asked. Ironically, their security isn't all that good.

Howard: You know, I'm really glad you decided to learn Mandarin.
Sheldon: Why?
Howard: Once you're fluent, you'll have a billion more people to annoy instead of me.

Bernadette: Maybe we should get one of those machines to help her up the stairs.
Howard: You mean a forklift?

Sheldon: Sheldon Cooper does not cry.
Howard: That's true, you'd rust.

*Sheldon is using a map of the U.S. to find out where he can move*
Sheldon: Penny, you're from Nebraska, right?
Penny: Born and raised.
*Sheldon crosses out Nebraska*

Sheldon: I do not have to urinate. I am the master of my own bladder. Drat.

Sheldon: My new computer came with Windows 7. Windows 7 is much more user-friendly than Windows Vista. I don't like that.