Watch Series: I Am the Greatest: The Adventures of Muhammad Ali Released in (1977) - Season 1 produced by USA, The TV Series categorized in Animation, and content rating 22min with duration 30 min broadcasted as these networks NBC, Streamed at Putlocker & directed by John Paxton, Kimie Calvert, Fred Calvert. I Am the Greatest: The Adventures of Muhammad Ali is an animated series featuring heavyweight boxing legend Muhammad Ali, who starred as his own voice. The short-lived series was broadcast Saturday mornings on NBC in the fall of 1977, but was cancelled by January 1978. - Season 1