There are a lot of hacks out there that modify the firmware on your iPod. You can put Linux on your iPod, Wikipedia, all sorts of cool stuff. Many people hesitate to hack their iPod since they are worried about losing their music or having their iPod go dead on them. If this is what's holding you back, don't let it stop you. You can hack away at your iPod and it's real easy to get it back in it's original state.
Just connect your iPod, start iTunes and go to your iPod in the DEVICES section. Once your iPod is shown in iTunes, there is a button right there on the screen that says "Restore". Click this and all of your hacks on your iPod will be gone and it'll be like it was originally. It's nice to be able to play like this and not have to worry about permanently breaking things.
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