American Film Institute Top 50 Sci-Fi Movies of all time (2008)

In alphabetical order:

A.I. Artificial Intelligence, Alien, Altered States, The Andromeda Strain, Back to the Future, The Beast From 20,000 Fathoms, Blade Runner, Children of Men, A Clockwork Orange, Close Encounters of the Third Kind, Cocoon, Contact, The Day the Earth Stood Still, Destination Moon, E.T. the Extra-Terrestrial, Escape From New York, Eternal Sunshine of the Spotless Mind, Fantastic Voyage, The Fly (1986), Forbidden Planet, Frankenstein (1931), The Incredible Shrinking Man, Independence Day, Invasion of the Body Snatchers (1956), The Invisible Man (1933), It Came From Outer Space, Jurassic Park, Mad Max Beyond Thunderdome, The Matrix, Men in Black, Minority Report, Planet of the Apes (1968), Repo Man, RoboCop, Rollerball (1975), Silent Running, Soylent Green, Star Trek: The Wrath of Khan, Star Wars: Episode IV--A New Hope, Starman, The Stepford Wives (1975), Terminator 2: Judgment Day, Them!, The Thing From Another World, The Time Machine (1960), Total Recall, Tron, 2001: A Space Odyssey, The War of the Worlds (1953), Westworld.