Mainly 'indie' music, like The Wrens, Spoon, Built to Spill etc. Big fan of Radiohead, whatever they are. Also into jazz (Charles Mingus, Miles Davis, etc.), classical Romantic music (Tchaicovsky, Rachmanimoff, etc.), electronica (Aphex Twin, 808 State, etc.), and hip-hop (Nas, Jay-Z, Wu-Tang Clan, etc.). So pretty much everything:
http://last.fm/user/riffrafi/chartsI feel that good music has similar qualities, more so than songs of the same genre do. For me, there's more similar between Nas's N.Y. State of Mind and Radiohead's Lucky than there is between Nas's N.Y. State of Mind and 50 Cent's *anything*.