Re: Silent Running...
Dark Star, with various contributions from Dan O'Bannon. He would go on to write another Monster on a Spaceship movie you might have heard of: Alien.
Some of the other creative talent on Alien were first assembled for an aborted Dune movie project.
Kubrick was a photographer... and a former chess hustler. I've heard that Ridley Scott can draw like Ruebens. Visual people.