Pumping Iron is a 1977 docudrama about the world of bodybuilding, focusing on the 1975 IFBB Mr. Universe and Mr. Olympia competitions. Inspired by a book of the same name by  Charles Gaines and George Butler, the film nominally focuses on the competition between Arnold Schwarzenegger and one of his primary competitors for the title of Mr. Olympia, Lou Ferrigno. The film also features brief segments focusing on bodybuilders Franco Columbu and Mike Katz, in addition to appearances by Ken Waller, Ed Corney, Serge Nubret, and other famous bodybuilders of the era.