In no one's words but Mike Tyson’s own, Toback allows one of the greatest boxers who ever lived an amazing self-examination captured on celluloid. The response has been nearly universal in its acclaim. Mixing archival footage and a few days spent with the champ, Toback has made one of his best films.
http://www.movieretriever.com/blog/318/interview-director-james-toback-talks-tyson