Listen to the sound clip About us. from Back to the Future Part III (1990): About us. About us. This sound is from Back to the Future Part III (1990) "Back to the Future Part III" is a 1990 sci-fi adventure film directed by Robert Zemeckis. The film serves as the thrilling conclusion to the iconic "Back to the Future" trilogy. Starring Michael J. Fox as Marty McFly and Christopher L… Go to the full soundboardwith more sound clips Search