There are honestly quite a few that I dislike, but the reasons vary. Often times, there's at least one forgivable aspect that makes it hard for me to say "I don't like it" For example, while I don't like Wicked for many reasons, I do love the soundtrack. The music is great, as far as I'm concerned. Everything else... eh... no thanks.
On the other hand... when I think of it, I really can't think of one thing I didn't hate (or at least dislike) about Cats. From the costumes, to the music, to the dialogue, to the storyline, to the characters, to the names... Yeah, no, going with Cats.