I actually like some of Nickleback's stuff. I will listen to it on the radio and sing along (except for their newest song), but its nothing I'm going to put on my Ipod or anything.
I really don't like the Black Eyed Peas. Their music is just painful, plus their performances at the past two Superbowls were horrendous.
Country music (except Faith Hill and Sons of the Desert). Just thinking of country music makes me twitch.
I used to hate owl city, and I'm still not fond of it, but since I've been living with a roommate who likes them, I have developed a tolerance and antibodies.
I can't stand Radiohead. They make me want to jump off a cliff. I had an English teacher in college who brought in a whole bunch of Radiohead CDs played practically every song for the class. By the end I'm pretty sure the whole class wanted to stab her in the face.