It's the question on everyone's lips, how does the Man of Steel shave his beard? Gillette asks celebrity geeks about their theory on the matter. But if only someone, anyway, had actually said Gillette.
The campaign features scientist Bill Nye, Big Bang Theory's Mayim Bialik, film director Kevin Smith and the Mythbusters duo Jamie Hyneman and Adam savage.
Watch Bill Nye's theory.
Watch Kevin Smith's theory.
Watch the Mythbusters' theory.
