Stephen Hawking, famed for his revolutionary cosmological theories, once gave a lecture on the joys of scientific discovery in which he touched upon the so-called "eureka" moment: the sense of being the first person to discover something about the nature of the universe.

This feeling might not quite be comparable to sex, Hawking declared, "but it lasts longer!"

["The astrophysicist Stephen Hawking recently visited a London strip club," Conan O'Brien announced in July 2003. "While at the strip club, Hawking was overheard saying, 'Hey, the universe isn't the only thing that's expanding.'"]