This has to be my favourite documentary of all time and anyone with even a passing interest in sci-fi movies should check it out. It's about the eccentric Mexican director Alejandro Jodorowsky's failed attempt to make a Dune movie in the seventies. Ultimately the project got scrapped because the studio thought it was going to go over budget, but it would have been incredible. He had hired Pink Floyd to do the soundtrack for House Atreides and Magma to do the soundtrack for House Harkonnen. His list of actors included Orson Welles (!), Salvador Dalí (!!!), David Carradine, Mick Jagger, among others. His 12 year old son Brontis was to play Paul Atreides, and he trained 6 days a week for several years in martial arts in order to prepare for the role. For set and character design he had hired H.R. Giger, Chris Foss, and Jean Giraud (Moebius). The documentary goes on to give examples of how ideas that were going to be used for this movie got recycled into other popular sci-fi movies. Also the soundtrack to the documentary is pretty great, I bought it on vinyl.