As inspiration for the new iPod nano, Apple looked to an iPod of the past - the iPod mini. With its brightly colored aluminum casing, the second-generation iPod nano looks like a mini iPod mini, available in silver (2GB or 4GB); pink, green, and blue (4GB); and black (8GB). The new case is a vast improvement over the first-gen nano's easily scratched veneer. We carried it around in a bag for a week - crashing up against keys, coins, a camera, and other potential finish-wreckers - and it didn't pick up a single mark. Svelte at 3.5 by 1.6 by 0.26 inches and 1.41 ounces, it's even slimmer and lighter than the first iPod nano, and sturdy enough to survive being sat on by a 280-pound reviews editor when it was in his back pocket.