Some Horror movies recommendations?

SAW

some classics are ringu, ju-on, shutter, and one missed call.
there are probably others but i'm forgetting them at the moment

Let the Right One In - The Swedish version.

Grave Encounters was pretty good. I also heard the Descent is good but fell asleep during that one

the orphan?

The SAW

Sinister

wrong turn 4

George Romero's the night of the living dead the original, black & white)? His first movie (I think) and the best zombie movie imo.
For the tittle you've mentioned I see you prefer slasher/gore/violence kind of horror over psichologycal. I don't know many of that kind but how about Carpenter's the The Thing? Awesome movie imo, but not sure if considered horror or just sci-fi.
The best psychological horror movie I can think of at the moment is 1408.

Ginger Snaps and Ginger Snaps: Unleashed
On of the best horror movies I have ever seen.

[Rec]

Event Horizon

the exorcist is my fav .. followed by 28 days later and orig Night of the living dead.

the last Resident Evil is horrible... oh, wait, you mean horror

Martyrs. The movies you like and all the ones listed above me are pretty tame compared to this film. You've been warned.

The descent.

Stakeland

If you like horror, I'm assuming you've seen The Ring... but if not CHECK THAT SHIT OUT. The Grudge is probably one of the scarier movies I've seen, so I'd definitely recommend that as well (talking about the american version). Hmm what else... I know there are loads of others I could recommend but I'm blanking atm.

How was Dead Silence? I remember watching the preview awhile back and even that scared me XD. Never got around to watching it.

Silent Hill, not rlly scary but it's good, kinda.

Enjoy!

"Old" films be damned (they're classics!), the 1978 version of Halloween still holds up today, just massive amounts of escalating tension.

For something more modern you could always try Eden Lake. It's pretty grim.

Dead Silence, Insidious, Sinister, Prince of the darkness, Shatter, Possession

-30 Days of Night (its straight to DVD sequel is alright, I wouldn't recommend it super highly but my cousin worked on it, its worth seeing if you like 1). Vampires

-A L'Interieur (Inside) - French subtitled but a real great flick. Psychopathic Bitch

-Amityville Horror (remake). Possession/Demons

-Child's Play series (there are some weak entries but they are all pretty enjoyable if you like one. Killer Dolls (lol)

-Candyman (1 is good, 2 is okay if you like 1, 3 is avoid at all costs). Supernatural/Immortal killer with a hook for a hand

-Cursed. Werewolves

-Dawn of the Dead (original by Romero is superior to the remake, but Zac Snyder of 300/Watchmen/Man of Steel) directed the remake, first movie he did. Zombies

-Day of the Dead (again, the original). Zombies

-Dead Alive sometimes known as 'Braindead' (perhaps the goriest film of all time, directed by Lord of the Rings Peter Jackson). Zombies

-Drag Me to Hell (not gory, but phenomenal). Supernatural/Curses

-Evil Dead 1, 2, and 3 (Army of Darkness) oldies but amazing. Part 1 is like 80 % horror 20 % comedy, 2 is 50/50, and 3 is like 95 % comedy but its fucking hilarious. Supernatural/Survival

-Fallen, not gory nor really horror but its Denzel Washington (and we all know he has yet to make a bad movie) and its a really awesome premise. Possession/Demons

-Friday the 13th remake (not oscar gold but 1000 % better than part 1-10 (though Jason X is probably the best comedy of its time) and better than Freddy Vs Jason. Unkillable Maniac

-Hannibal Lector movies, not true horror but they are damn good. They are filmed out of order, if interested, order is Hannibal Rising (weakest entry) Red Dragon, Silence of the Lambs, Hannibal. Ridiculously intelligent cannibal

-Hellraiser 1-4 (worth seeing purely for every single thing Pinhead says, his lines are truly horrific and evil. Avoid 5 and on, straight to video tripe). Demons

-Haute (High) Tension sometimes known as Switchblade Romance. Serial Killer

-Ils (Them) - french horror movie, subtitled IIRC but really fantastic. Strangers is kind of a remake of it. Serial Killers

-Land of the Dead (not good as Dawn or Day but it gets a lot of shit pretty undeservedly, it cost peanuts to make and has fucking fantastic SFX and sets and a decent cast). Zombies

-Last House on the Left (remake if you want gore and ick, original if you want to see the single most disturbing movie of its time). Serial Killers

-Mirrors. Supernatural Killer

-Nightmare on Elm Street 1, 3, and 7 (Wes Craven's New Nightmare) avoid the remake except if you want to see an amazing Freddy Krueger (he's truly heinous looking compared to the original series, but the movie's a real fucking turd). Supernatural Killer

-Piranha. Self Explanatory? =P

-Planet Terror. Zombies

-Se7en (thriller not horror but its a must see). Serial Killer

-The Thing (John Carpenter's, starring Kurt Russell) older movie but its SFX really hold up and theres some cool shit in it. Monsters that replicate humans (and dogs)

-Underworld 1 & 2. Avoid 3, 4 is decent if not devoid of plot. Horror-action. Vampires/Werewolves

-Wolfman ...

Hanna Montana The Movie. One of the creepiest movies ever shivers

I'm not a huge horror fan, but I love some of the horror/comedies.

Slither (closest to full horror, with plenty of gore and a wicked sense of humor. Really good writing, hilarious characters)

Tucker and Dale vs Evil (Funny trope reversal, you have to see this. Also, has Alan Tudyk [Wash, from Firefly/Serenity]

Scream (You already mentioned this, but I'm just agreeing. :D)

Evil Dead (Also already mentioned above)

I feel like there's more, but I can't think of them off the top of my head. Slither and Tucker and Dale vs Evil are both great, though, if you're into that sort of thing.