I'm more neutral with it. My ex tried to make me watch Aliens I, but I think I got bored half way through it. AvP wasn't too bad though, but I also barely recall it. I do, however, love the design of the aliens. Predator not so much, but the aliens were rather kickass looking.
I never played the videogames, but I'm sure they'd be far more interesting than the movies I've seen at least.