The '70s are responsible for a lot of strange and outlandish cinema, but it's also produced some of the most lasting and influential films of all time. When Chilean-French filmmaker Alejandro Jodorowsky brought The Holy Mountain– his follow-up to the acclaimed Western El Topo– to the 1973 Cannes Film Festival, it was so uniquely strange, it was almost destined to become a midnight movie classic. Jodorowsky's film was a surrealist mélange of jaw-dropping, often disturbing imagery, exploring vast themes in a way that hadn't been done before or since.