The Beatles.
Most of hip-hop. Modern R&B. Country. Any music with stupid growling (pointing at you, death metal). Most of jazz ("hey peers, look at me, I can play, I can play"). Generally anything borne purely from the record producers and companies. Anything false and made for the wrong reasons (i.e. publicity, money).
I probably sound like a grumpy old hater, but I like to think that I'm more open-minded than 99% of music consumers today.