Genuinely scary

Poltergeist

The Thing

The Entity

A Nightmare on Elm Street

Come and See

Aliens

The Fly

Blue Velvet

Henry: Portrait of a Serial Killer

Hellraiser

Pumpkinhead

The Vanishing

Pet Sematary

Santa Sangre

The Exorcist III

Jacob's Ladder

Misery

The Silence of the Lambs

Cape Fear

Twin Peaks: Fire Walk with Me