I'm a horror buff but the sad thing is the more technology advances, the more you expect, so when I go back to watch my childhood favourites now it makes me cringe. So I can't list those because I wouldn't watch them again now. They're just too corny :/ Shaun of the Dead is kind of horrorish though. Albeit it's a comedy so...man. That's sad.
Older horror movies have more charm to them I'd rather them than modern horror movies because today's movies seem really empty and lack any identity, today's horror movies have characters act like they're not even human and never make them make logical choices. They're just living off cliche's and calling it a day.
Newer is never always better.
Avatar is just Pocahontas and Dances With Wolves but in space and with blue people.
I remember being in the cinema watching that movie with some friends, we were making fun of it. I don't think it's been praised for anything else other than its special effects. Disregard everything else, call it a 10/10 movie for special effects alone.