Some gems from your American brethren:
For
rap/hiphop fans:
Atmosphere - Guns and Cigarettes
The Pharcyde - Otha Fish
De La Soul - Stakes is High
Styles of Beyond - Subculture
DJ Krush - Most Wanted Man
Michael Franti and Spearhead - Rock the Nation
Rock/Metalheads:
Powerman 5000 - Organizized
Puddle of Mudd - Psycho
Soundgarden - 4th of July
Static-X - Destroyer
System of a Down - Stealing Society
And some other things I can't classify:
ill.gates - Pick it Up
Morphine - French Fries with Pepper