The entire movie embodies Cassette Futurism, but IMO the self-destruct sequence is particularly great. The entire process looks so satisfying that I probably wouldn't be able to stop myself from running it if I were one of the crew.
More of it here: https://www.youtube.com/watch?v=J9CqREun_Bg
Yes. The original was butchered by studio execs that didn't understand the film. I've only seen clips of it, but it's pretty bad.
The final cut is what I and most people recommend. It's a small aesthetic and pacing change over the "directors" cut.
And definitely watch Alien too!
(ˊᗜˋ)/ᵗᑋᵃᐢᵏ ᵞᵒᵘ*