I am open to a wide, wide range. Not much for rap though, except for a few exceptions (80s pop-rap, Public Enemy, Faithless).
I don't go in much for anything made past 1999 or so, that is when I sort of fell off the music radar. Not that I might not like it, but I don't have much familiarity with newer stuff.
I am actually probably super eclectic in my tastes, but tend towards stuff that makes my friends groan. Like a good mix CD for ME will have like Alice Cooper, Tatu, Petra, Toy Box, a Public Enemy/Herp Alpert remix, Aqua, the B-52s, Brian Eno, Alien Antfarm, and some sort of video game music on it, in roughly that order.