Alien/Aliens is a given for most people. I have been watching Event Horizon during the spooky season for years. What are some of your favorite books and movies with a horror/psychological thriller lean?
Moon - really good psychological element and great acting.
Pandorum - fun (and a bit hammy) action horror romp.
Twelve Monkeys - really tight and suspenseful plot with great acting.
Being John Malcovich - not sure if this fits in, but a great mind-bender of a sci-fi movie.
There are some generally great small(!) / low budget movies, especially sci-fi. Here’s one example, this one’s basically zero budget but it’s a great one (12min): https://tube.instellate.xyz/watch?v=GhDlV9PDw3Y
SOMA by frictional games.
It explores some of the usual questions about what exactly the human mind might be, if it ever becomes possible to scan, simulate, copy and transfer consciousness.
But it does so in video game form, in a way that makes you face those questions from a visceral, personal, first hand experience perspective.
It’s a science fiction masterpiece.
You know what I love about Event Horizon?
That the evil hallway of spinning blades has a handrail.
Well yeah! Safety first. Otherwise, they might have OSHA on their ass, and nobody in Hell wants to deal with that.