Making a deck of cards

Poor ol' PowerPoint gets a bad rap, but I have to admit that it really can be useful for trainers. Here's a new use idea -- mix some PowerPoint magic and some Word action and 'presto!' -- you've got a deck of cards!

A customized deck of cards could be a great way to add interactivity to a training session. Forget "Go Fish" and try "Put together the URL!" or maybe "Sites to Evaluate". What are some other innovative ways that a customized deck of cards could be used?