Some people are content to use their iPod simply to play music. Some people want to do much more. Those people, and you know who you are, aren't satisfied until they get under the hood and tap every iPod trick available to them. They want to explore and experiment, create shortcuts, and unearth cool and unexpected things to do with their iPod that have never even occurred to their friends. Maybe they want to use their iPod to read email. Maybe they...