Heavy Metal is a 1981 Canadian fantasy-animated 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, it has a great deal of graphic violence, nudity, and sexuality. A stand-alone homage titled Heavy Metal 2000 was released in 2000.