Big Bang Theory Quote
Zack: That's your big experiment? All that for a line on a screen?
Leonard: Yeah, but, uh, think about what this represents. The fact that we can do this is the only way of definitively proving that there are man-made objects on the moon, put there by a member of a species that only 60 years before had just invented the airplane.
Zack: What species is that?
Sheldon: I was wrong. Penny can do better.
Quote from S03E23 - The Lunar Excitation