Optical Alchemy has a wicked keen iTunes visualizer— Jewelcase, which displays a 3D rendered spinning jewelbox of whatever album your currently playing song is from, complete with tracks listing and cover art. Of course, it uses your cover art in iTunes, so it works best if you’ve loaded in all your cover art (or got it with your AAC files from the iTMS).

You should check out my podcast about movie magic and VFX: The Optical.