There's no getting around the fact that iPods, especially the nanos, get scratched up. The scratches dull the surfaces of the iPod and make it look kind of dull. If you want to liven up your iPod and get it close to looking like new again, I've found that Brasso metal polish does a really good job of removing the scratches. It doesn't get rid of every single scratch, but it gets rid of most scratches, and it leaves the surface of the iPod looking almost new.

To use the Brasso, soak a cotton ball with the polish. Rub it onto your iPod in a circular motion. The longer you rub, the more scratches it removes. When I did mine, I rubbed for ten minutes. Once your done rubbing your iPod, let the polish sit until it dries. Once it is dry, wipe it clean with a dry cloth and be amazed at your new looking iPod. I did this on both the front and back surfaces of my iPod nano, and it worked great.