Films that made the final list that I didn't consider "horror" enough at the time of voting (to some regret, oh well; I do have M, Safe, etc.): Deliverance, The Night of the Hunter, Blue Velvet, The Phantom Carriage, Dead Ringers, and The Seventh Victim. (Also under consideration: Faust, Mulholland Dr., Death Proof, Donnie Darko, The Act of Killing, Ms. 45, Manhunter, Bigger Than Life, Young Frankenstein, Zodiac, and Targets.)
Should have voted higher: Dawn of the Dead, The Silence of the Lambs. Should have voted for (at all): Invasion of the Body Snatchers '78.