In the 1970s, Chilean director Alejandro Jodorowsky had a vision for a movie adaptation of Dune. He assembled an incredible array of talent (Pink Floyd! Salvador Dali! Mick Jagger! H.R. Giger!), and the film was months away from being made. Then, suddenly, nothing happened. Jodorowsky’s Dune is a documentary monument to one of the greatest unmade films in cinematic history, and it’s a showcase for Jodorowksy’s unbridled enthusiasm for moviemaking. Now a stone’s throw from 90, old man Jodorowsky displays more ambition, more genuine love of film than entire Hollywood Hills zip codes. (Sundance Cinemas, 4500 Ninth Ave NE, sundancecinemas.com, $12, 21+)