Teams I hate:
#1) Raiders - well, because its the Raiders...don't need any other reason.
#2) Pittsburgh - spent time in PA and really got sick and tired of hearing how great they are/were
#3) Redskins - mainly because of SB XVII
As for the Jets, Bills and Pats, of course I don't like 'em, but not nearly the hate I have for my top 3.
Other teams I like:
Bears, Packers and Vikings. I know, I know, your not supposed to like division rivals- but I do. I like the Bears because my family is from Chicago, the Packers because I used to watch them practice back in the '80s and Vikings because well, I'm Scandinavian.
As for the other NFL teams, it varies between extreme dislike to I don't give a damn. .