I just run till I'm hungry, and then I stop for a bear claw.

Penny

Lenny: I though you hate dogs.
Sheldon: A dog-opus can play fetch with eight balls. No one can hate that.

Leonard: Penny, Steve Wozniack was one of the co-founders of Apple computer. He and Steve Jobs...
Penny: Yeah. I know who he is. I watch Dancing With the Stars.

Oh look! It's Leonard and R2-D-bag.

Wolowitz

Penny: Honey, have you ever run before?
Sheldon: Certainly. I've run from bullies, dogs, angry chickens and one particularly persistent PE teacher determined to bend me over and give me a scoliosis test.

Sheldon: I don't understand why you're not enjoying this. Together, in this car, with my enhanced capabilities, we're like 'Knight Rider.'
Leonard: Except, in Knight Rider, the car isn't a yammering sphincter.
Sheldon: You mock the sphincter, but, the sphincter is a class of muscle without which human beings couldn't survive. There are over 50 different sphincters in the human body. How many can you name?
Leonard: I was wrong. This is exactly like Knight Rider

Sheldon: You're 15th favorite technological visionary.
Steve Wozniak: Only fifteenth?
Sheldon: It's still six spots above Steve Jobs. I care neither for turtlenecks nor showmanship.

The Big Bang Theory Season 4 Episode 2 Quotes

Sheldon: I don't understand why you're not enjoying this. Together, in this car, with my enhanced capabilities, we're like 'Knight Rider.'
Leonard: Except, in Knight Rider, the car isn't a yammering sphincter.
Sheldon: You mock the sphincter, but, the sphincter is a class of muscle without which human beings couldn't survive. There are over 50 different sphincters in the human body. How many can you name?
Leonard: I was wrong. This is exactly like Knight Rider

Sheldon: You're 15th favorite technological visionary.
Steve Wozniak: Only fifteenth?
Sheldon: It's still six spots above Steve Jobs. I care neither for turtlenecks nor showmanship.