I bought this plugin for iTunes called "Tune Up". It's pretty neat, you drag and drop some files onto it and it'll find the files through Gracenote, then update all of your ID3 tags. Pretty useful!
Keeps your ID3 tags in order and in turn keeps your music library sorted up. I'm liking iTunes the more that I use it. It's not slim but the rating system is nice, and "Genius" is just what it says, pretty darned genius. It'll suggest tracks for you.
Of course it tries to sell them but I just pop into soulseek and grab them. How nice is it to have an MP3 player and phone that works with my car? Pretty damned nice let me tell you.