Mostly Rap, but I listen to everything.
2 Pac, The Game, Young Buck, Lil Whyte, Bone Thugs, Lil Wayne, Chamillionaire, DMX. I hate the mainstream stuff that is MTV-ized and overplayed on the radio, talking about this girl and that ****, look @ my icy grill, and crap like that. It ruins what people think of rap.
On the other side of the spectrum, my g/f got me into Heavy Metal - Killswitch Engage, Dry Kill Logic, August Burns Red, Inhale/Exhale.. Gotta love Metallica, too.