Xtreme Mac, "the iPod Xperts," has a Bart Simpson cover for the iPod nano. So don't have a cow, man, protect your iPod from scratches with an Iconz.
If you don't have an iPod nano, now's your excuse to get one. Seriously, what sort of Simpsons collector are you? (Really, you need more than one, cause the other Iconz are pretty cool too: Batman, Speed Racer, Darth Vader, Scooby-Doo... check out the slideshow).