Pumping Iron is a 1977 documentary film about the run-up to the 1975 Mr. Olympia bodybuilding competition. The film focuses on Arnold Schwarzenegger and his competitors, Lou Ferrigno and Franco Columbu. The documentary was co-directed by Robert Fiore and George Butler. It was based on the book of the same name by Charles Gaines and George Butler (Simon and Schuster, 1974).Pumping Iron featuring Arnold Schwarzenegger and Lou Ferrigno is streaming with subscription on Netflix, available for rent or purchase on iTunes, available for rent or purchase on Google Play, and 3 others. It's a documentary and sport movie with a very high Rotten Tomatoes (critics) score of 94% and a better than average IMDb audience rating of 7.4 (19,346 votes).