• Brazil - 1985 comedy about a bureaucratic future
  • Fahrenheit 451 - 1966 movie based on the Ray Bradbury novel depicting a society where books have been outlawed
  • Invasion of the Body Snatchers - 1956 science-fiction movie about alien "pods" taking over individuals in a small town
  • Star Wars - 1977 science fiction movie, known as "Episode IV: A New Hope", first release of the series

Reference

Science fiction film - Wikipedia, the free encyclopedia
"Science fiction film, also known as SF or SciFi, is a film genre that uses science fiction: speculative, science-based depictions of phenomena that are not necessarily accepted by mainstream science, such as extra-terrestrial life forms, alien worlds, ESP, and time travel, often along with futuristic elements such as spacecraft, robots, or other technologies. Science fiction films have often been used to focus on political or social issues, and to explore philosophical issues like the human condition. In many cases, tropes derived from written science fiction may be used by filmmakers ignorant of or at best indifferent to the standards of scientific plausibility and plot logic to which written science fiction is traditionally held. ..."