I’m making a list of science fiction movies (for no good reason) and would like people to post their choices for consideration. Note: the word science in the subjest line is capitalized, so all the Star Trek, Star Wars, Alien1-4,Jurassic Parks and Close Encounters of the 3rd Kind need not apply.
The Andromeda Strain
Colossus:The Forbin Project
Stuff like Star Wars and Star Trek is classified as “Space Opera”. That’ll help you make distinctions 'tween them in the future.
Blade Runner is generally accepted (by most everyone I’ve talked to, anyway) as good science fiction. Also, though it contains many Space Opera elements, The Sixth Day is SF-ish enough to be included in the list (it poses the question “What if mass human cloning was possible?”, and then shows how that power could be abused).
A really interesting little film is Cube. Much more of a character study than a pure science fiction film, but very interesting nonetheless, and I think the setting and mysteries qualify it as SCIENCE fiction.