T.A. Hamilton & Tom Burgoon collaborated and came up with this gem.

A card is selected and returned to the deck. Upon opening the card box, the spectator finds the name of the chosen card written on the inside flap! The deck is then spread upon the table revealing the chosen card is now the only one turned over! This card is removed from the deck and slowly turned over showing it now has a different color back than the rest of the cards! Suddenly the remaining cards are turned over showing the chosen card is the only card left in the deck! Every card in the deck now has a back on both sides and is completely examinable!