Fighting games that aren't Smackdown vs RAW or UFC Undisputed. I.e. Street Fighter, Tekken, Mortal Kombat. They are all so boring.
JRPGs because they usually take too many liberties with the RPG elements, the story is nearly always spiky-haired youth with big sword saves the world, cutscenes that last way too long! =/
Hey that counts for WRPGs too, in Fallout 3 I was a spiky-haired youth who saved the world!
OT: It's not really hate, but I do dislike Sports games. They can be fun once in a while though.