For quite some time, I've been a fan of OverClocked Remix. If you like gamer music, you might like this site, too.
Click to browse gamer music or to find and download free remixes. And since they've got great free music downloads, it's nice to help support their bandwidth by making a donation, or by purchasing a nifty tee like this one found on eStarland.com.
On my playlist, there are lots of OCRemixes. Most of them are from my favorite Final Fantasy RPGs, though the list of remixes available are too numerous to name.
Today I found some stuff I'd not heard before.
Time to load up the iPod!