Artax in the Swamp of Sadness

A Watership Down. Fucking trauma for years.

Fire in the Sky Just no. I couldn't even look at an image of a grey alien for years. Had to look away during the opening credits of X-files because they flashed an image of a grey. I got over it. I actually rewatched it during the pandemic lock-in. It holds up pretty well.

Oh wow, yeah Event Horizon is not a good movie to see in your youth haha. That's intense!

For me, I didn't get to see the whole movie, but I walked into the living room while my parents were watching Hostel and I saw the achilles tendon scene. That imagery still haunts me to this day. Grew up to love horror, though!

Blair witch project. I really thought it was real founded footage

This was definitely not a horror movie, but I watched it as a very young kid, so even as an adult I don’t like this fucker.

I was a real scaredy cat as a kid, so for me Terminator and Jurassic Park were the ones I remember giving me nightmares that other people would know. Outside of that weirdly the movie "the edge" with its bear terrified me, I always imagined a bear could just rip through the wall of our home and grab me. Another weird one was The 13th Warrior, there was a particular scene in.a bloody cabin that really upset me, but I dont think the movie was really scary, I was probably just way too young to watch it

Poltergeist. Fucked me up around static for the rest of my life.

John Carpenter's The Thing. I wouldn't go down to the basement by myself for like three months.

Still one of my favorite movies.

Stephen King's IT. Technically a mini-series. But it messed me up for awhile, especially the blood on the shower wall scene.

I was going to say the same thing! I was so surprised to see that exact movie as your choice lol. It's a great movie.

My cousins made me watch John Carpenter's The Thing when I was eight years old. Assholes.

The movie Saturday the 14th also messed me up for a while, what with the Creature from the Black Lagoon getting into someone's bathtub through the drain pipes. It may be silly dreck, but it was a bit much for a five year old.

Arachnophobia. I one of the ones that claims I acquired a minor version from the film. Took me years to get over it. Of dedicated effort, after I grew up. Even today a sudden sighting can sometimes get a squeak out of me though, annoyingly.

Raiders of the Lost Ark. 12 year old me had a great time with that movie until people startet to melt...

Human Centipede and its sequel.

The Shining. Watched it when I was under ten years old.

Couldn’t sleep with the lights off for months.

But I agree with OP about on the Event Horizon movie. My experience with that film was great cause I just expected a sci-fi movie. Instead I got a twisted vision of horror that still haunts me to this day.

House of wax (1953). Invasion of the body snatchers (1956 and 1978).

Jaws. I was literally scared to take a shit for a while.

The Ring got me pretty bad. Was scared to even turn on the TV .

I’m almost too embarrassed to admit it - Little Shop of Horrors (1986)

When I was 17 I saw Halloweentown and the part with the ghosts made me shit bricks

I too was a weaker constitution child and had to leave Beetlejuice and Jurassic Park.

I also ended up scared of Leprechaun in a hotel room when I was like 6.

One that sticks out that I've never been able to place, though. I was in another hotel room with my dad and woke up to it. All I remember was a gargoyle or something was killing people and at the end they managed to trap its spirit in a chair and then burned the chair in a fire. I had nightmares about that movie for years after but have never been able to figure out what it was.

Mars Attacks when I was 6. My parents had the brilliant idea to take me to see it at a drive-in, so larger than life screen, and it was the second film, so I think they probably figured I’d fall asleep and they could stay and watch. Nope. Pretty sure I didn’t sleep for weeks.

The Pit and the Pendulum. I had nightmares about it for decades.

Poltergeist. Saw it when I was like 7 and was afraid of mirrors for years after that. They still feel eerie to me at night/in the darkness.

Fright Night (the 1985 one). I was 6. The idiot daughter of the woman babysitting me thought I was asleep on the couch, so she put it on.

I was not asleep.

Poltergeist 2. I must have been 6 or 7 the first time I watched it. The designs and special effects were amazing. This scene in particular fucked me up big time:

https://www.youtube.com/watch?v=ZMQCyJ2lhu8

Cats Eye

Trilogy of Terror messed me up pretty badly as a kid. I kept my feet off the floor for a week. I just kept jumping around from piece of furniture to piece of furniture.

I saw Event Horizon in my 20s. My bro-in-law and I thought it was just going to be a goofy horror movie that we could laugh at.

We were wrong.

Something Wicked This Way Comes... my dad and I stumbled into an onboard cinema on a ferry trip to continental Europe, and I saw maybe two or three minutes of the film, out of context. I could only have been about 5 or 6 and the imagery on screen scared me witless.

Don't Be Afraid of the Dark (IMDb), a 1973 made-for-TV movie. I was single digits old and remember watching the living room TV hiding behind the legs of a kitchen chair.

70s - Black Christmas
80s - Poltergeist, The Changeling

The damn rabbit from Monty Python

Last movie that gave me nightmares was Mirrors (2009). I was alredy barely an adult back then.
I woke up in a panic for 2 weeks straight and put on the light to check my mirrors. I recently decided to watch it again. It's pretty underwhelming and random af to me now. Didn't scare me in the slightest (aside from a few cheap jump scares, but I hate them anyway).

Independence Day. Specifically the autopsy scene. The voice they used kept me up for weeks.

Shutter (US version). Later on in college, I watched the Thai version. Both scared the crap out of me.

El Orfanato. Watched it as part of a foreign language film club at school when I was about 12/13. Over a few weeks we watched some Ghibli, some great Italian films and then this.

Nothing could have prepared me for this film, I'd never watched a horror movie before. I had nightmares for at least a month, and I'd actually be hesitant to watch it even now because it scared me so badl!

Has to be said though, was a great film and it had me choking up at the end.