I am not a huge blood & gore kinda guy. Still, I dig a good horror flick. So, here it is:
1. Halloween (1978) -- Just plain scary. And fun.
2. Psycho (1960) -- One of the best twists ever. Too bad its infamy has ruined the shock for everyone in the world.
3. Les Yeux Sans Visage (1960) -- Beautifully shot French horror flick, that brings the "trapped with a mad scientist" thing to a whole new level. A lot more gruesome than you would expect from a film of this era.
4. Sean of the Dead (2004) -- Horror flick or comedy? Both, really. Love it.
5. Night of the Living Dead (1968) -- The original.
6. Body Snatchers (1993) -- Updated and reimagined story from the same concept as the original 60's film. But better. Set on an Army base, the ultimate setting for conformity. An incredible, chilling monologue from Meg Tilly.
7. Evil Dead 2 (1987) -- Okay, so this is probably my #1. It's what the 3 Stooges would look like if they really did poke out each other's eyes.
8. The Shining (1980) -- I actually interviewed for the role of Danny when I was a kid. But I got no farther than that first interview. Probably a good thing. I would have had nightmares forever had I been on set for this, I think.

Maybe I'll think of more later.