I still remember when i watched as a teen. It was airing on TV and I was like "sweet, a sci fi space movie!". I was really enjoying it but then the horror starts... I was so freaked out but couldnt stop watching.
Without spoiling, it challenges your entire conception about what consciousness and life are. It's definitely an Event Horizon kind of horror mind fuck that sucks you in. (Except it's a book so that feeling continues for days lol)
I never read any Dune. Always wanted to. My mom picked up the first one for me, used, somewhere, when I was little, and I stared at it on the shelf for decades.