Sorry fable, but imo, Saw (along with Final Destination) has really run its course. The first one was very fun, and I quite enjoyed the Amanda ( i think that was her name ) twist in the second, but after that it became so generic that the only difference between the movies was the way they died. (I'm sure there are other differences but they truly, truly are irrelevant). But if you enjoy them, fair enough. I'd rather that movies try and be unique instead of following the same generic pattern. Which is why I liked Prometheus, they tried something very radical with it and in my opinion it paid off!
-The Thing (1982 version)
-Alien (and Aliens)
-American Psycho
-Prometheus (not really much of a horror movie, more of a sci-fi thriller, but still insanely good)
-Sunshine
-Event Horizon
-Battle Royale (weird hyper violent Japanese movie)
-Tremors
This guy shares my taste in movies. A lot of them are cult films, like BR and American Psycho. American psycho is more of a psychological thriller though. Sunshine is very good, Danny Boyle is a great director, and I think it sends a few nods in the direction of the Alien franchise. The whole trapped in space thing.
That said, I think the only true horror movie from that list is The Thing. The rest are Thrillers. But then again it doesn't matter. Genre is kind of like a marketing tool.
Anyway, here are some of my other good ones.
o Let The right one in (novel is good too)
o Scream 1 (kind of a comedy but the whole plot of the movie is based around horror movies.
o Blair Witch Project
o Nightmare on elm street & Halloween (definitive of the horror genre!)
Also Roman Polanski is a great film-maker. Anything by him, horror or not.
