Those really weird thumb creatures from Spy Kids. Could not STAND them and the movie would rerun almost every day.

Also King Rameses from Courage the Cowardly Dog.

The first Resident Evil movie. Not because of the zombies, it was the laser scene that got to me. I was convinced that lasers would come out of any reflective surface to get me. I didn't like how they seemed to react to the guy avoiding them, making it impossible for him to escape, like they were intelligent and trying to kill him.

Fantasia, not specifically the Night on bald mountain section, but the bits with the orchestra.

Also a TV series in the UK called Mealstrom. The paintings would come to life, which was ok but the intro was creepy AF https://youtu.be/_FwP5LAXd7U

An American Werewolf in London. My parents were watching it when I was like 6. The opening sequence on the moors scared the hell out of me, and they decided I should go to bed. I think they had heard it was a comedy, so weren't prepared for actual horror. That scene stuck with me for like 20 years before I ever rewatched it. It's a good movie as an adult.

killer klowns from outer space. now as an adult i find out its considered a comedy!

The first scene of Willow

My Girl. The ending with the kid dying from getting stung by all those bees messed with my mind as I was only like 5 or 6 when I saw it.

Threads (1984). Still one of the most realistically possibje horror films ever made. The BBC banned its re-airing for 40 years due to being too disturbing.

https://en.wikipedia.org/wiki/Leptirica

That was scaaary for young kids, I was afraid to watch it again 30 years after. Now it is almost funny.

Here is the link if you want to check it out: https://youtube.com/watch?vojhfYK0T5c

The Tall Man from Phantasm scared the shit out of me

I still have a nightmare once a decade about him chasing me screaming "BOY!"

Maximum Overdrive. It has taken me until adulthood to get over the irrational fear that big machines like trucks will come alive and drive me over. For many, many years I always got a slightly uneasy feeling when I'm cycling and a big truck goes by (even though I live in a country with good bike infrastructure and bike on separated bike paths). Even now at 26 I occasionally get the feeling. It's silly, and I've mostly gotten over it. I guess my interest in cars and anything mechanical has helped me get over it, thankfully curiosity is sometimes strong than fear.

Funnily enough I occasionally listen to AC/DC and at some long ago point I stumbled upon their album "Who Made Who" and it became a favourite of mine. It was only a few years ago I realized that the album is the soundtrack to Maximum Overdrive!

Several years ago I actually bought a DVD copy of the movie; it's still wrapped in plastic to this day. It's not that I'm scared to see it, I just haven't gotten around to it yet, and by now I'm unsure where it even is any more.

The Exorcist, specifically the part where she runs down the stairs upside down on all 4s and screams. Me and my brother cried forever that night lol

Texas Chainsaw Massacre. I had a room in a very messy basement at the time, in the dark it looked very similar to the one in the movie.

Schindler's List. Saw plenty of scary movies before this, but that scene where the officer murders the engineering prisoner who's just trying to tell him about a problem with the building. It just sticks in my mind to this day as maybe the first time my young, sheltered self had been confronted with a realistic example of what dehumanizing could do.

Stephen King's IT.

Tim Curry is a phenomenal actor.

Them!.... old movie about giant ants. Even now when i hear the noise they make it gives me goose bumps.

Snow White and the Seven Dwarfs. The old animated one by Disney. The Witch/Evil Queen scenes would always scare the living shit out of little old me! When my sister and I would watch the movie with our grandparents, they would have to fast-forward through those bits.