metal: Disturbed, Rammstein, Drowning pool, used to listen to sevendust, Slipknot, Static-x, System of a down, Godsmack, Deftones, Nine inch nails, Fear factor, Creed, Powerman 5000, Apocalyptica (Chello Metal
)
Rap: Eminem, Tupac, Akon, Coolio, outkast, and two the three R kelly songs, (About that much for all rappers except eminem and Tupac).
Country: Toby keith, Kenny chesney, Garth brooks, Brad paisley (probably my favorite), George strait, Craig morgan (mostly only almost home), a few songs of Darius rucker, Trace adkins, Alan jackson,
Christian rock/metal

OD, Disciple, RED, One song from Sanctus real, War of Ages, Demon hunter, Skillet,
"Old" rock: Alice in chains, AC/DC, Led zepplin, Jimi hendrix, Guns N Roses, Poison, Phil collins (mostly in the air tonight), Pink floyd,
And a few left out, Kid rock, and from the Titan AE soundtrack, It's my time to fly "The urge (Band)", and Cosmic cast away by Electrasy.. Along with The gorrilaz.. There are probably more i listen to but can't think of off the top of my head... also listen to Swing, And blues.. Don't know any specific artists though unless you want to listen to BB king.
And Classical/Stuff like enya is nice too.