2001: A Space Odyssey
The Ultimate Trip.
Adapting Arthur C. Clarke's science fiction short story "The Sentinel", director Stanely Kubrick expanded the scope of the work from a brief inquiry into the existence of life in the universe to a meditation about the development and advancement of intelligence.
“Watching a Kubrick film like 2001 is like gazing up at a mountaintop. You look up and wonder, how could anyone have climbed that high?” – Martin Scorsese.