Mastodon - Vocals shitty enough to the point that I can't believe the masses have accepted them.
Fates Warning - not particularly bad, just plain boring and nothing special about them.
U2 - Again, just plain boring.
Nirvana - The sloppiest band that ever made it big, ever. Kurt was a mediocre lyricist, a bad guitar player, and a horrible songwriter. Pearl Jam and Alice In Chains were proof that grunge can be done right and well, but Nirvana was easily the most successful grunge band. That is something I will never "get".
The Who - I have no real reason for not getting them, I just flat out have never liked a single Who song I've heard.