Here's another trick of mine:
http://video.google.co.uk/videoplay?docid=-3550430063349023881
It is similar to a trick of Criss Angel's. A spectator can choose any card, sign it or whatever, place it in the deck, shuffle the deck themselves and lose the card completely. The cards are then spread all over the table, and the magician finds the spectator's card by simply hovering their hand over the cards. Criss finds the card by stabbing it with a knife, and this can be done the same way. My video isn't too good though, as I had neither a spectator nor knife to hand.
Thanks again for watching.
Edit: Thought I would mention that the handling required to let the spectator cut and shuffle the deck is slightly different to the way the cards are handled in the video.