Angel Heart
The Wickerman (original)
Pumpkinhead
Event Horizon (sci-fi, but the feel is so there)
Bladerunner
The Descent
In the Mouth of Madness
The Company of Wolves
R-Point (For all the same reasons mentioned for Deathwatch earlier)
The Cave
Bogeyman
Bad Moon
Buried Alive/II
Dracula II: Ascention (sequel to Dracula: 2000 that managed not to suck)
Ghost Ship
Brothers Grimm
Warlock
The Musketeer (Tim Roth as Fabre was too awesome in that movie)
V for Vendetta
Deathmachine (Brad Douriff's character in this even creepier than he managed to make Wormtongue)
The Attic Expeditions
Nadja
Wraiths of Roanoke (Not excellent, but a great feel I think)
The Count of Monte Cristo
The Crow
They
Darkness Falls