Limp Bizkit by far is one of the worst.

Coldplay-the guy can't sing on key, and the music is very boring. I don't know why people like them as he is a very bad singer.

Wolfmother-unoriginal and making money off Sabbath's riffs.

U2-Again, boring music where the lyrics seem to have no meaning. There is only one song i like by them, and that's Sunday Bloody Sunday.