Im a big fan of:
Halloween, Psycho, The Omen, The Exorcist, Scanners, Videodrome, the Fly ok ALL DAVID CRONENBERGS MOVIES!!!
Prince Of Darkness, The Thing, Dracula (Bela Lugosi obviously), Creature From The black Lagoon & most of the Hammer Horror movies from the 50's - 70's,
The Wicker Man! A seriously under rated Horror flick!
& many many others, too many to mention