I like most music but however much I've tried I've never been able to like metal, save for five or six bands (none of which are Metallica, Megadeth, Slayer etc.). I also detest the majority of the whiny, samey American pop-punk/power pop/"emo" or whatever you want to call it. By this I mean bands in the vein of Cartel, RJA and pretty much every band that adds you on myspace and begs you to listen to their music because they're "really cool and original and sing from the heart."
I'm also not a huge fan of rap music although it does have it's moments and chipmunk rave music is rather horrible, as is "opera-pop" or whatever you want to call it. Rubbish like G4, Il Divo...you get the picture.
Apart from that I'm easy.