Brainwave Deck - Bicycle
A boxed deck is shown. Any card is named. The deck is removed from the box and run through. A face-up card is found (the named card) and removed. To prove there was no "sleight of hand" the named card's back is shown to be different from the rest of the deck.
Perfect for beginners, virtually no practice is needed. If you can count to 10, you can do this trick every time.