Productivity is dandy, but the real reason we love iPhone apps is the selection of games. Whether you prefer to stick to the classics — Snake has been revived for the iPhone, along with versions of PacMan and Tetris — or want to try something completely new like Crash Bandicoot or Chimps Ahoy, we have hundreds of entertaining ways to lose track of time. There are even multiplayer games for iPhone and iPod Touch — we suggest Fingertips Sports Air Hockey or 300Bowl.