Classic Rock (The Beatles, David Bowie, CCR, Clapton, Pink Floyd)
Rock and Metal (GNR, Metallica, Iron Maiden, Ozzy, The White Strips, The Black Keys, Audioslave)
Alt, moderate rock, funk (Nirvana, RHCP, Soundgarden, STP, Alice in Chains, The Cure, Morrissey/The Smiths, Modest Mouse, Gorillas, Violent Femmes, Portid Head, Bjork, Radiohead).
Hip Hop (Beastie Boys, Blackalicious, The Roots, Atmosphere, MF Doom)
Jpop, Kpop, Aphex Twin, Faye Wong, etc. My list is extensive (over 300gigs of music).