2001: A Space Odyssey
USA, 1968. Director: Stanley Kubrick
"I am putting myself to the fullest possible use, which is all I think that any conscious entity can ever hope to do."

Once 2001 blows your mind, you're never quite the same again. Evolution, God, extra terrestrials, the perfect silent movie intro, unequalled cinematic advancements, man vs. machine, the dichotomy of synthetic intelligence and then: Through The Stargate. What a trip. God bless you Mr Kubrick.
Also ran: Citizen Kane, Apocalypse Now, Dr Strangelove