Original Australian One Sheet movie poster, artwork by Chris Achilleos. Heavy Metal is a 1981 Canadian-American adult animated anthology science fiction fantasy film directed by Gerald Potterton and produced by Ivan Reitman and Leonard Mogel, who also was the publisher of Heavy Metal magazine, the basis for the film. The screenplay was written by Daniel Goldberg and Len Blum. The film is an anthology of various science fiction and fantasy stories adapted from Heavy Metal magazine and original stories in the same spirit. Like the magazine, the film features a great deal of graphic violence, sexuality, and nudity. The film enjoyed only limited appeal in its initial run, but became a popular cult attraction for midnight theatrical showings, much like The Rocky Horror Picture Show. Legal problems with the copyrights for some of the music used in the film prevented a commercial home video release for 15 years, although the film was in rotation on some cable channels.