Blade Runner
Released in 1982, starring Harrison Ford, Rutger Hauer and Sean Young, a blade runner must pursue and try to terminate four replicants who stole a ship in space and have returned to Earth to find their creator.
Back to the Future
A young man is accidentally sent 30 years into the past in a time-traveling DeLorean invented by his friend, Dr. Emmett Brown, and must make sure his high-school-age parents unite in order to save his own existence.