I think David Blaine is the real deal. No tricks, he just does it. Maybe a pact with the devil, maybe some white magic, who knows? I saw him pass his arm through a windo at a jewelry shop, the window was closed, a pane of glass. He picked up a piece of jewelry and gave it to a girl looking at it!
k how come when he's like "here, see how its full" and it pours some out, how come the camera is always at the worst angel and cant see crap... those people were actors imo, and the can never turned full.
The actual changing part was very short and involved a lot of movment. He moved his arm in an exaggerated manner and he moved it off the camera. Also, his other arm moved almost constantly. The rubbing the top was a ruse, as was the pouring.