This trick is actually really cool. The spectator chooses any card (no force) and the back of the card is shown to have a misprint. We've all had those decks where the borders aren't centre and we hate them. This is what is shown on the back of the card. The magician simply waves the card back and forth and so visually, right in front of the spectator's eyes, the card corrects itself. The card is then handed out for inspection.

A quick note: You have to really draw attention to the misprint otherwise people will have no idea what just happened. I know this from experience. This is a really great trick and I highly recommend it.