The most terrifying movie you've ever seen.
 

Okay, so right off the bat, from the title, I'm going to get a lot of well known blockbuster answers. This is not what I want.

I am looking for something underground, something I won't find on a top ten list of horror movies.

I want a movie that will shake me to my core and give me nightmares (I'm an adult, mind you). Not just gore, but really, truly f-ing terrifying.

Please can you help me?

I think that's a pretty subjective question... I have one qualifier, what scares you? I have a unnatural fear of the dark so certain movies get me when people go into dark rooms and you know something's getting ready to go down. I'm not easily frightened but the dark gets me every time. What is your fear trigger?

*The Exorcist
*The Haunting (1963)
*Don't Look Back
Paranormal Activity 1
*The Innocents
Carnival of Souls
*The Legend of Hell House
The Ring
Vertigo
Persona and a few other Bergman movies

The ones with *s are so disturbing to me I would hesitate to watch them again.

P.S. Scary is WAY different than gross/disgusting for me. I've seen lots of movies of the latter sort, but disgust is not an emotion I enjoy indulging. Scary, otoh, now that's big fun ... :-)

Movies haven't scared me since I was a kid watching Pet Cemetary at 3am with metal cooling/expanding sounds coming from the basement. Not sure I can help.

BUT you could try Inhumanities. Its like Faces of Death, but about other things. Live cannibalism, brutality of hunting zebras for their hide. Stuff like that. Its a documentary, not a film with a plot. But not exactly a documentary. Its been a while, but I believe its just sequence after sequence of these things.

You could also try Bug(2006). Watch it with all the lights out, make sure its quiet and allow yourself to be sucked in.

examples
 

Well here's a few examples of movies I consider actually scary:

1. The Fourth Kind
2. Grave Encounters
3. August Underground
4. Oculus
5. Dead End

But I'm looking for something that's not so well known. Psychologically, physically, and or spiritually terrifying.

Im watching a movie now called The House of Last Things that's quite a mind fuck. Its not horror but its scary in a way. It makes your brain twist to follow the story. Also anything by David Lynch, Mullholland Drive, Twin Peaks, Blue Velvet. They are scary but because you get lost while watching them.

Have you seen Yo Momma?

I haven't been here that long but I've seen that question come by several times.
"Hey, what's the scariest/most shocking/most disgusting/whatever horror movie?"
There should be a sticky thread on this subject with a big arrow pointing to it.

...........::shocked::

There is nothing scary about August Underground,gross yes not not scary in the slightest.

Dead Silence

Curious, what scene in Dead End did you find scary?

i found american werewolf in london terrifying when i was a kid, in fact anything with werewolves really, funny its actually one of my favourite movies ever now. The changeling is the cliche movie for everybody of a certain age and ead silence would be for many, i don't really get scared by movies, as i'm just that brave! The staring black man in the devil rides out was also brown trousers time for me when younger Wonder if jake has seen triangle (2009) ? Thats a proper mind melt movie, i actually had a foggy brain for about an hour after watching it its such a mind fuck.

I just looked it up... That does seem like a proper mind fuck. Ill be watching it tonight. Thanks for the heads up. I love watching movies that, by the end, I feel like "What the fuck just happened to me?"

One False Move, 1991...

It's a crime/cops movie...nothing more...not a horror movie at all...
EXCEPT
For the home invasion scene...THAT WAS SCARY...
Especially the slow, methodical, even GENTLE way...the killer set about stabbing each victim to death...
They're already effectively hogtied...all on the floor begging for mercy...
He gathers pillow cases and then sits on the floor with each victim, gently cradling their head in his arms/lap...he slowly and calmly places a pillow case over the first female victim's head, despite her blubbering and crying...
While still cradling her head, he draws he knife and then viciously stabs her in the stomach, repeatedly, working the knife back and forth inside her...deeper thrusts each time.
And then on to the next victim.

FUCKING SCARY SCENE!

For my fellow horror addict
 

Try the fallowing:

The Vanishing(1988)
August Underground
Angst (1873)
Cat People (1942)
Dark Water (2002)
Rec (2007)

Like others posted, each person is different, but the following really gave me the creeps and I certainly recommend them:
HENRY: PORTRAIT OF A SERIAL KILLER
EYES WITHOUT A FACE
DELIVERANCE
NIGHT OF THE LIVING DEAD (1968)
STRAW DOGS (1971)
THE HAUNTING (1963)
THE THING (1982)

All I can think of now...let us know if you find what you're looking for.

that's the maddest i've seen jake, i don't actually like those sort of movies, just i've come across a few in my time. let me know what you think of it. The cube movies are quite odd in there own way, and there is a newish one, a few years old, that is a bout some reality field in a forest thats pretty trippy to. You might wanna try a few lynch movies, there always odd and 'identity' may also leave you wondering 'what the fuck' at the end of it.

Lynch was actually my suggestion back towards the beginning of the thread. Blue Velvet is one of my all time favorites. Those sort of things scare me, if you can make me feel like something strange happened in my own head by the end of the movie. Or make me feel confused, that shit blows me away.

did you see triangle and what did you think of it. You might enjoy philosophy of a knife. Its not really weird but it is long, drawn out to the nth degree, thoroughly unpleasant, and generally a movie that leaves you feeling confused and miserable about life. also try meat love a film about two pieces of meat falling in love wtf???????

Lol! I haven't seen triangle yet, but it is on my short list. I don't have enough time to watch movies lately. Work... Stupid, stupid work.

coincidentally (at least i hope it was) i watched a quite odd one last night called dark corridors (2008 i think) that you might enjoy, its a middling sort of film but if you enjoy your head going fuzzy you might like it. Lemme no what you think of triangle when that life inconvenience that is work allows you some free time.

Haven't sh@t myself probably since The Ring (Japanese version).
Recent western horror films I have seen recently areThe Babadook, Conjuring, while both very well made, I didn't find either that scary.

Well one movie made me jump out of my skin and thats The Conjuring ::EEK!::

you might also like 'flowers' jake

Eli Roth for the win as for more recent films that had that ambiance and environment that made me a little uneasy. Cabin Fever really did it for me and I can't wait for The Green Inferno to come out this September! As for older flicks:

1.) Child's Play
2.) A Nightmare on Elm Street (1984)
3.) Critters
4.) Compliance (Not really horror per se but chilling nonetheless)
5.) The Conjuring

I'd say at that specific time I watched it, these movies freaked the bejebus out of me.

The Ring (Original Japanese)
Sixth Sense

I watched the Exorcist when I was already 15, and kinda found it hilarious.

Im looking forward to Crimson Peak. Guillermo test ran it for Stephen King and his son and they said it was absolutely the most haunting and terrifying movie they had ever seen.

The Notebook

You win...

I was serious :)::cool::

Serbian Movie.I so much hate that movie.

I see you're from Serbia so I think I would understand your feelings....I thought ASF was interesting, definitely disturbing but well done

would have being better if it didn't look so cheap

The Descent

Less scary, just really disturbed me when the mother achieved orgasm while vigerously rubbing her exposed brain.

The Exorcist was never really that scary to me.

You had to see it in context. When it came out there was really nothing like it, it was very realistic for film and it was based on a true story. It was a genre bender. If you had seen it when it first came out in theaters you would have shat yourself. People where literally running out of the theater. All of that said, Im not old enough to know that first hand, I heard it from a friend of mine.

Its not scary, just very well made so that its quality supersedes its horror element.