This list will include what are in my opinion the greatest contributions to the Science Fiction Genre through the medium of celluloid. They also happen to be some of my favorite films!

My list includes:

2001: A Space Odyssey
Metropolis
Blade Runner
Alphaville
Solaris (1972)
The Terminator Series
Planet of the Apes (1968)
12 Monkeys
The Time Machine (original)
A Clockwork Orange
Alien
Fahrenheit 451
Silent Running
Star Wars Episode IV
Tron
Akira
The Man Who Fell to Earth
Soylent Green (yes, it's people!)
Westworld
They Live
Starship Troopers
THX-1138
Invasion of the Body Snatchers (original)
Day the Earth Stood Still
Forbidden Planet