Others may be clucking on about the tablet revolution and how Apple's iPad will change the world of computing forever, but we know why you really bought an iPad: games. Racing games, strategy games, MMORPGs, they're all there lining the virtual shelves of the App Store, waiting to be downloaded in a matter of seconds. How do you choose from a virtual marketplace brimming with so many choices - and more than a few duds? With a little assistance. Check out some of our own favorites!