What are your most favourite horror movies?

Do Gremlins and Evil Dead count as horror movies? Then I'd add them to my list of favorite horror movies! :D

Edit: Adding Sinister and Dark skies.

Find that hard to tell. I don't need a horror film to be gory to enjoy it but I can live with it if it makes sense within the context of the story. Also important is that the story and the charackter's actions make sense, at least within the universe of the film. If charackters are acting stupid or the story does not follow it own set rules that is something wich tends to drag me out of the movie experience. Most important and partly caused by the former mentioned is a good fascinating atmosphere.

That said I don't really care about what kind of horror film it is. So I think instead of telling you what kind of horror I prefer it may be more helpful to just give you some examples wich movies I really like. That would be:

• House of the Devil (probably my favourite)
• Rec 1&2 (while I think there are not that many good found footage movies out there beside Blairwitch Project, I really liked these two. Managed to feel pretty realistic, despite it's unnatural elements)
• The Tenant (more a psycholigal story than a horror film. But very disturbing and frightening)
• Nightmare on Elm Street (just a great idea for a killer. In the end noone can escape the need to sleep)
• The Descent
• Ju-On 1&2 (the japanese one's, not the american remakes)
• Paranormal Activity
• Shawn of the Dead (one of my alltime favourites but I'd say it is an exception as I think the mix of horror and comedy is very hard to create.)
• Posession (french/german arthouse drama with surrealistic elements where I still don't think I understood everything what happened. But surely one of the most disturbing movies I've ever seen)
• Funny Games

That one and "Demonic" where some really surprising horror movies, I wasn't expecting anything from them and they manage to surprise me, good acting and a well constructed plot.

You are the second person here commending it. It sounds kinda interesting. Will keep this one in mind and give it a try when I can. Thanks. : )

Oh yea how could I forget Jacob's Ladder. It's among my favourites. And yes I really like the Silent Hill game series.

Haven't heard of Season 9 but alone the fact that it also influenced Silent Hill makes it interesting for me. Thank you. : )

finally someone mentions The Exorcist, maybe somebody did earlier and i missed it but anyway great movie.