I like things that makes me think and analyze, as well as things being on the queer side. No wonder Revolutionary Girl Utena is a match made in heaven for me.
I don't like to use ratings, as I can see several faults in the anime that moved me the most. I'd rather talk about how something made me feel and think, than try to rate something on a numeric "objective" scale. I prefer to see a series try to be ambitious and creative but fail in it's delivery, rather than a well-executed series that doesn't try to challenge conventions in any way.