Griffin introduced its Disko iPod case two months ago to mostly jeers: who the hell wants their iPod to look like a disco dance floor? Now iPod nano users can see if they're down with the Disko, too, since Griffin has released the Disko for the nano. The concept is the same: an iPod case that has a series of LEDs around the click wheel that light up like so many John Travolta movies. It's only $30, so at least being completely embarrassed won't cost too much. Griffin also released the iClear case, but there's no disco jokes to make about that one.