"What An Excellent Day For An Exorcism"
I saw the Exorcist when I was about 8 years old. That did it for me.
It seems "horror" is interpreted to each of us differently.
I guess I lean toward older or more suspenseful films. Slasher films never really did much for me. Psycho, Night of the Living Dead, Dracula, The Thing, Invasion of the Body Snatchers, Evil Dead, Halloween - all classics. Many bloody and suspenseful thrillers have come out, but nothing scared the hell out of me more than The Exorcist.