Yep, that is crazy. He's a good man too. In this video: http://www.youtube.com/watch?v=jjUXiwn9djU He talks about using the hair off the back of a fly to paint with and jokes that he'd never kill the fly, because it might have a family or something.
That is one of the more impressive feats I have ever heard about. Even after viewing multiple websites (including the TED video) about his work, I'm still skeptical in the back of my mind. That's how good his work is!