One of our readers pointed me in the general direction of this page, which features more information than you ever wanted to know about the iTunes visualizer. the cheat sheet lists keyboard shortcuts for various commands, as well as all of the visualization forms, effects, and color schemes. The page notes that “There are 11475 form/effect combinations, and 734400 form/effect/color combinations. It would take over 1000 hours to try them all out! And of course you’ll want to try out your favorite ones with different types of music. And if you’re still bored, you can try to experiment with favorite transitions - which should keep you busy for the next 100000 years or so...”

Translation: the iTunes visualizer can do a whole heck of a lot!

Please note that the cheat sheet was written for iTunes 4, so some things may have changed since then. However, it’s a good starting point for learning about everything the iTunes visualizer can do. Check it out!