Ok, some of my faves....
All the classics - Dracula, Frankenstein, Wolfman, The Exorcist, original Halloween, Friday the 13th, Nightmare on Elm Street, The Bruce Campbell movies, Night of the Living Dead
More recently - Paranormal Activity, the 1st Hostel, Drag Me to Hell (it was fun, classic 80s horror movie), The Ring, The Grudge, Wrong Turn (? the one with the crazy inbred hillbillies), Session 9, Black Sheep (funny! the horror movie, not the David Spade movie), Dead Alive (funny!), Killer Klowns From Outer Space (fun!), Zombieland (fun), and Shaun of the Dead (fun)
Saturday nights at our house are horror movie and wine nights. I've seen a lot of good ones, and a lot of very bad ones.
I can take a pass on most Alfred Hitchcock (boring!) and most Stephen King movies (boring!). Although I think Hitchcock may have done the one about the axe murderess who killed her husband and was released from jail back to family and went all nutty again - can't think of the name, but it was good.
Nan