Neil Berkeley on 'Gilbert,' a quiet portrait of a loud-mouthed comedian

Documentary filmmaker Neil Berkeley desperately wanted to make a movie about the screeching comedian Gilbert Gottfried. But when he started spending time with Gottfried and his wife Dara, he found someone who was much different from -- and quieter than -- his onstage persona. Berkeley tells us about getting to know the real Gottfried and following him on the road, where he is shockingly frugal.