I like strong female protagonists, romantic drama, political subterfuge, robots/futuristic tech and slice of life. I dislike dumb male protagonists, comedy derived from feeling awkward for someone (I.e. any thing Ricky gervais has made for TV) one dimensional characters (think snow white) and contrivances/Deus ex machina like most shounen
Obviously there's nothing with every piece, I'd settle for one or two of those themes and a cool premise.
For the moment I have every episode of Gundam wing, which is really cool. As an example of something I hate, Love Hina.