Whats YOUR favorite scary movie?

[The Dark Defender]

The Descent
Paranormal Activity 1-3
The Silence of the Lambs/Hannibal/Red Dragon
Let The Right One In/Let Me In
Black Swan
Jeepers Creepers
I Spit On Your Grave (2010)
The Hills Have Eyes (2006)
The Devil's Rejects
Scream/Scream 2
The Ring
The Texas Chainsaw Massacre (1974)
A Serbian Film
28 Days Later
Frailty
The Last Exorcism
The Exorcism of Emily Rose
Candyman
A Nightmare on Elm Street/Dream Warriors/New Nightmare
Fright Night (1985)
The Thing (1981)
Halloween (1978)

 

[LOBO3315a]

Aliens. It's actually my favorite movie of all time.

Other honorable mentions:
Prince of Darkness
1408
The Mist
Nightmare on Elm Street (I and III)
Blair Witch Project
The Ring
The Silence of the Lambs
Paranormal Activity I and II
Halloween (The Original)
Halloween (Rob Zombie)
The Hills Have Eyes I and II (Remakes)
The Descent

 

[co2]

The Thing
Silence of the Lambs
Psycho
Let the Right One in
Alien

These are the big 5 and they are interchangeable (In terms of which is best) so I did not rank them. I think there many other horror films that are good too but these just have much better quality than any of the others I can think of.

That's a solid list. I would add Se7en, and two movies that I still have a hard time watching...The Shining and The Exorcist. I still have a hard time sleeping after watching those two.