Originally Posted by wikipedia

[Jodorowsky planned to film the story as a ten-hour feature, in collaboration with Salvador Dalí, Orson Welles, Gloria Swanson, David Carradine, Geraldine Chaplin, Alain Delon, Hervé Villechaize and Mick Jagger. It was at first proposed to score the film with original music by Karlheinz Stockhausen, Henry Cow and Magma; later on, the soundtrack was to be provided by Pink Floyd.[2] Jodorowsky set up a pre-production unit in Paris consisting of Chris Foss, a British artist who designed covers for science fiction periodicals, Jean Giraud (Moebius), a French illustrator who created and also wrote and drew for Metal Hurlant magazine, and H. R. Giger. Moebius began designing creatures and characters for the film, while Foss was brought in to design the film's space ships and hardware. Giger began designing the Harkonnen Castle based on Moebius' storyboards. Jodorowsky's son Brontis Jodorowsky was to play Paul Atreides. Dan O'Bannon was to head the special effects department.

Salvador Dalí was cast as the Emperor. Dalí later demanded to be paid $100,000 per hour; Jodorowsky agreed, but tailored Dalí's part to be filmed in one hour, drafting plans for other scenes of the emperor to use a mechanical mannequin as substitute for Dalí. (According to Giger, Dalí was "later invited to leave the film because of his pro-Franco statements").[3] Just as the storyboards, designs, and script were finished, the financial backing dried up. Frank Herbert travelled to Europe in 1976 to find that $2 million of the $9.5 million budget had already been spent in pre-production, and that Jodorowsky's script would result in a 14-hour movie ("It was the size of a phonebook", Herbert later recalled). Jodorowsky took creative liberties with the source material, but Herbert said that he and Jodorowsky had an amicable relationship.