I certainly like the Beatles, but I actually think they're somewhat overrated. I'd catch a lot of flack for that if I said so publicly. I'm not saying they're bad - something can be very good, even great, and still be overrated.
Bruce Springsteen is another one. Again, I like his songs, but I don't quite understand the attraction his fans seem to have.
Pink Floyd - Dark Side of The Moon is, to my ears, an album with one great song (Money) and a bunch of strange stuff. Again, I just never bought into the mystique.
However, one of the great things about music is exactly that - it is very subjective. We each feel its pull in different ways.