Well, my music taste is very diverse. I'm a great fan of Beethoven's Symphonies, especially the 9th, 6th and 3rd. I really enjoy Cuban music, Jazz, Electroswing, a little Metal, some Punk, Drum'n'Bass, Hardstyle, Hardcore, Glitch, and some other stuff. My post in the "Hit Shuffle" thread gives a pretty good impression.
And through QC I've discovered Post rock, which I really like. When I discovered it I listened to Explosions in the Sky, Mogwai and Sigur Rós without pause.