In 1974, the Chilean filmmaker Alejandro Jodorowsky attempted to adapt the classic sci-fi novel Dune into a major motion picture. He recruited Orson Welles, Pink Floyd, H. R. Giger, David Carradine, Salvador Dali, and Mick Jagger to the project, completed 3,000 pieces of story art, and spent millions of dollars preparing for production. Investors freaked when he asked for more money —and when they realized the script would account for a meandering 14-hour film, they pulled the plug on the project. Director Frank Pavich’s entertaining documentary Jodorowsky’s Dune makes the case for this overblown epic as a legendary lost masterpiece (read our review here). Through interviews with legends and luminaries including HR Giger (artist, Alien), Gary Kurtz (producer, Star Wars) and Nicolas Winding Refn (director, Drive), and an intimate and honest conversation with Jodorowsky filmed over the course of three years, director Pavich’s film – featuring never-before-seen realizations of Jodo’s mind-blowing psychedelic space opera (animated by Emmy Award nominated Syd Garon) – finally unearths the full saga of ‘The Greatest Movie Never Made’. With the film set for release on March 21st, a trailer has finally been released thanks to the US distributor Sony Pictures Classics. Have a look at it below.