Bombed Out In Space With A Spaced Out Bomb
Dark Star (1974) was John Carpenter's feature debut, and was made two years before Assault on Precinct 13. The DVD production notes say that the movie started out as a student film, then got $60K funding, and eventually was flushed into a full-length movie.
The movie features 4 hippyish astronauts who travel around space blowing up unstable planets. Although deliberately-paced, the film is never boring. The movie was co-written (and featured) Dan O'Bannon of Alien fame.
Click through for the UK World Of Video 2000, LTD (Tomorrow's World Of Video Entertainment Today) box art and a trailer.