here's a great case for the ipod called the iskin evo 2 it comes in 5 standard colors: arctic, ebony, carbon, sonic (my fave), and blush. also four colors that glow in the dark: lava, wasabi, vamp, and ghost.
it includes an integrated docking port cover, to keep liquids,dust, etc. out, a clear screen saver with soft contacts so you don't scratch your screen. also the revoclip which allows you to rotate your ipod when clipped to your belt. nice.