What is the BEST scary Movie EVER?

Ooooh, I'm so honored that I'm the first to answer this!!! Love original Psycho and the Saws, too. It really depends what you're going for, but here's my breakdown:

Best filming/art: Suspiria, The Cell

Best whodunnits: Saws, Screams, Cry_Wolf, Gaslight

Best tension: Repulsion, The Haunting (original for cryin' out loud!), The Descent, Event Horizon, the Exorcist

Scared the bloody hell out of me still have nightmares: The Ring (Am.), Reincarnation (one of the 8 films to die for: hard to find).

Hope this helps!

Hellraiser 1-3

The Exorcist is a movie that will scare me every time I see that crazy girl's face. But my favorite is Kubrick's The Shining. BEST EVER!

Runners Up:

Tales from the Crypt: Demon Knight

Tales from the Hood(i'm serious)

and the Twilight Zone Movie(not that scary but good)

want to see a new one thats GREAT no one knows about?

Haute Tension - Freak you Out man, freak you out

The original Exorcist.

I have to be honest in saying that all these "old and original" movies don't and have never scared me. The only two movies that I can say gave me nightmares for like, weeks were The blaire witch project and The Ring.

The Exorcist ... I shouldn't need to go any further than that if you want a scary movie

I really liked 13 Ghosts, but I think the Exorcist takes the cake.

I've never seen a film since that has frightened me as much as the original Exorcist did.

Aliens

I think that the trailer for the Grudge 2 was the scariest preview I've seen, but I haven't seen the movie.

Exorcist, Shining, and Poltergeist are standbys