The whole "starve in a cage" thing has been done a lot of times before, I don't doubt he really did it, mostly because that's not real magic, he just stayed in a box and waited.

The real magician is the one who can perform before a live audience, and never reveals the secret behind it. Doing it with camera tricks, editing and planted audiences is NOT real magic. I can do some pretty neat magic tricks with some clever editing myself. Unfortunally, the original art of magic is fading away, thanks to these false magicians such as David Copperfield and David Blane.