Yes, I think I read a story somewhere that during one of the VC rounds he was so nervous about the terms that he ended up curled up on the floor of the bathroom??

Anyway, I think he seems like an all around decent guy, and I admire anyone who has the guts to turn down a billion from Yahoo (especially at his age, and on his first business!) That shows vision and confidence, so I think he's the perfect CEO for Fb (which will likely one day have a market cap greater than Yahoo).