Sorry for another list but I have these sitting on my computer so figured I would keep sharing. I am not sure the history or qualifications of this list but I believe it was something members of the IMDb horror board came up with.

[REC]
28 Days Later
A Nightmare on Elm Street
A Serbian Film
A Tale of Two Sisters
A Warning to the Curious
A Whisper in the Dark
Alien
Altered
Altered States
American Psycho
An American Werewolf in London
Angel Heart
Angst
Antibodies
April Fool's Day
Army of Darkness
Assault! Jack the Ripper
Audrey Rose
Bad Taste
Basket Case
Behind the Mask: The Rise of Leslie Vernon
Belve Feroci
Bird with the Crystal Plumage
Black Christmas
Black Sabbath
Black Sunday
Blind Beast
Blood and Roses
Blood Feast
Blood for Dracula
Blue Sunshine
Body Double
Brain Damage
Bug
Burial Ground: Nights of Terror
Caligula
Candyman
Cannibal Campout
Cannibal Holocaust
Cape Fear
Carnival of Souls
Carrie
Cat People
Chaos
Chute de la Maison Usher
Creepshow
Cube
Curse of the Werewolf
Dance of the Damned
Dark Water (2002)
Dark Waters (1994)
Daughters of Darkness
Dawn of the Dead (1978)
Dawn of the Dead (2004)
Day of the Dead
Dead Alive
Dead and Buried
Dead Heat
Dead of Night
Death Bed
Deathdream
Dellamorte Dellamore
Demon Seed
Demons (1985)
Demonsamongus
Dog Soldiers
Don't Look Now
Dracula (1931)
Duel
Dust Devil
Ebola Syndrome
Eden Lake
Equus
Eraserhead
Eugenie D'Sade
Event Horizon
Evil Dead II
Eyes Without a Face
Face of Another
Faces of Death
Faust
Fido
Flesh and the Bloody Terror
Frankenstein
Freaks
Friday the 13th
Fright Night
Frightmare (1974)
From Beyond
Funhouse
Gin Gwai
Ginger Snaps
God Told Me To
Gojira
Gremlins
Grindhouse
Halloween
Halloween II (1985)
Halloween II (2009)
Hangover Square
Hard to Die
Hardware
Hatchet
Hausu
Hellraiser
Henry: Portrait of a Serial Killer
High Tension
Hostel
Hour of the Wolf
House by the Cemetery
House of Mortal Sin
House of Usher
House with Laughing Windows
I Drink Your Blood
I Walked with a Zombie
In a Glass Cage
In the Mouth of Madness
Inferno
INLAND EMPIRE
Inside
Intruder
Invasion of the Body Snatchers (1956)
Invasion of the Body Snatchers (1978)
Jacob's Ladder
Jaws
Kill, Baby, Kill
King Kong
Korkarlen
Kwaidan
Last House on the Left
Let Sleeping Corpses Lie
Let the Right One In
Let's Scare Jessica to Death
Lisa and the Devil
Litan
Long Weekend
Luther the Geek
Mad Love
Man Bites Dog
Maniac
Mannequin in Red
Marebito
Mark of the Devil
Martin
Martyrs
Masque of the Red Death
May
Mill of the Stone Women
Murders in the Zoo
Murder-Set-Pieces
My Bloody Valentine (1981)
My Son, My Son, What Have Ye Done?
Near Dark
Nekromantik
New York Ripper
Night of the Demon (1957)
Night of the Demon (1980)
Night of the Demons (1988)
Night of the Hunter
Night of the Living Dead
Night of the Werewolf
Noroi: The Curse
Nosferatu (1922)
Nosferatu: Phantom der Nacht (1979)
Onibaba
Open Water
Opera
Pan's Labyrinth
Paranormal Activity
Perfume of the Lady in Black
Picnic at Hanging Rock
Pieces
Piranha
Pitch Black
Planet of the Vampires
Possession
Predator
Prince of Darkness
Profondo Rosso
Psycho
Ravenous
Razorback
Re-Animator
Repo! The Genetic Opera
Repulsion
Return of the Living Dead
Ringu
Ringu 0
Rosemary's Baby
Salo
Santa Sangre
Satanico Pandemonium
Saw
Scanners
Scream
Scream of Fear
Se7en
Session 9
Shaun of the Dead
Shivers
Silence of the Lambs
Singapore Sling
Slither
Slumber Party Massacre
Snuff 102
Sommarens tolv manader
Spider Baby
Spoorloos
Straw Dogs
Suspiria
Tenebre
Tetsuo
The Beyond
The Birds
The Black Pit of Dr. M
The Blair Witch Project
The Blob
The Body Snatcher
The Boxer's Omen
The Bride of Frankenstein
The Cabinet of Dr. Caligari
The Centerfold Girls
The Creature from the Black Lagoon
The Descent
The Devil-Doll
The Devils
The Devil's Rejects
The Evil Dead
The Exorcist
The Fearless Vampire Killers
The Flesh and the Fiends
The Fly (1986)
The Fog
The Grapes of Death
The Haunted
The Honeymoon Killers
The Howling
The Human Centipede
The Innocents
The Invisible Man
The Killer Snakes
The Killing of Satan
The Last Broadcast
The Last Horror Movie
The Last House on Dead End Street
The Living and the Dead
The Living Skeleton
The Lodger (1944)
The Man They Could Not Hang
The Manson Family
The Mephisto Waltz
The Mist
The Most Dangerous Game
The Mummy (1932)
The Nanny
The Ninth Gate
The Old Dark House
The Omen
The Orphanage
The Others
The Reflecting
Skin
The Ring
The Ruins
The Sect
The Shining
The Sixth Sense
The Stepfather
The Stepford Wives
The Tenant
The Texas Chainsaw Massacre
The Thing
The Thing from Another World
The Thrill Killers
The Toxic Avenger
The Ugly
The Unknown (1927)
The Vault of Horror
The Virgin Spring
The Wicker Man
The Witchfinder General
The Wolf Man
Them!
Thirst
Through the Looking Glass
Tombs of the Blind Dead
Torso
Tourist Trap
Triangle
Valerie and Her Week of Wonders
Vampyr
Videodrome
What Have You Done to Solange?
Whatever Happened to Baby Jane?
When a Stranger Calls
Whistle and I'll Come to You
Who Can Kill a Child?
Wolf Creek
Yngsjomordet
Young Frankenstein
Zombi