I watched the whole thing, from 8 to 10. David Blaine is the most fantastic street magician there. By 'magician' I mean he has the wildest illusions out there. If you're amazed at coins disappearing and cards changing color, David Blaine can do things that are 30x more visual, up-close, right-in-your-face magic. The thing with the girl's teeth was greusome, but a perfect example of the fact that David's capable of ANYTHING he puts his mind to. The Navy SEAL's training that he went through was very grueling, and he prepared for this hard. He faled by a minute. Now, when you hold a breath for more than 2 minutes, every second counts, and what he did was amazing. Although I believe that the show was spiced up with doctors making claims tha the won't make it, that he's very ill, etc. just to make it sound more exciting. This is probably true, as it is a great way for more publicity. But the fact that he actually spent 176 hours in a water ball with no food is amazing.
P.S.: could've been better if he was locked in chains throughtout the whole week, eh?