Over at LifeHacker.com, they have a rather excellent listing of iTunes Applescripts! Lifehacker is an excellent resource for finding hacks on any computer.

At Lifehacker.com can learn how to:

Remove dead tracks
Create block parties from my library
Gather one hit wonders
Make album playlists
Nag me to rate my songs
Get lyrics
Search wikipedia
Search for music videos
Search for Pandora stations
Import iPod audio files
Make PDF Booklet
Make a CD case
Make all these add ons keyboard shortcuts

Find out more at LifeHacker.com.