Let's face it: most of us can't carry a tune. But we'd like to think we can -- in the shower, in the car, outside late at night when we think no one's looking, and on American Idol. But we can't all be rock stars. Luckily we've got plenty of games to help us keep up the illusion. There certainly could stand to be a few more, but right now survey 15 of our favorite singing/rapping games.