YouTube - Penn and Teller Explain Sleight of Hand
http://www.youtube.com/watch?v=_qQX-jayixQ

Very cool american duo of comedians slash illusionists. They are the bane of the magician's community, not being one bit too shy to explain the mechanics of their tricks to their viewers.

Humor, magic, and education. What more could you ask for? (via http://www.cynical-c.com/?p=13572)

old classic, P&T explain sleight of hand