Rent Dark Star (1974)
3.1 of 5 from 162 ratings
1h 23min
Hadn't seen this in years and enjoyed it thoroughly - it's not perfect, but it predated Alien, Star Wars, Red Dwarf, etc and left its mark on them all. Think 2001 on a budget, but much funnier...
The Bluray is worth getting for the documentary feature on the making of the film - how it went from being an ambitious student project to a cult cinema release is a fascinating history in itself.