Home Permanent, and Prell shampoo, among their other products. Serling was not required to endorse any of P&G's products at the end of their episodes. Serling, in his narration, had predicted that professional boxing would be outlawed within five years of the episode's airing; at the time, the sport was mired in controversy after Emile Griffith killed his opponent Benny Paret in a nationally televised and particularly brutal 1962 match. With Paret's death at Griffith's hands, as well as the death of Davey Moore from a neck injury sustained in a March 1963 contest, the specter of the sport being outlawed was a realistic possibility at the time "Steel" was broadcast. Serling's prediction did not come to fruition; although boxing declined in popularity in the succeeding years, it has never been outlawed. Each of the five credited cast members appeared in one other episode — Lee Marvin starred in "The Grave" (October 1961), Joe Mantell starred as "Nervous Man in a Four Dollar Room" (October 1960), Chuck Hicks had an uncredited bit part as a mover in "Ninety Years Without Slumbering" (December 1963, two months after this episode), Merritt Bohn was billed at the bottom of the cast list in a bit part as a truck driver in Twilight Zone'''s second episode, "One for the Angels" (October 1959) and Frank London was billed third from the end in a bit part as a driver in ""A Penny for Your Thoughts" (February 1961). See alsoReal Steel, a 2011 American science fiction film also based on Richard Matheson's short story "I, (Annoyed Grunt)-Bot", a 2004 episode of The Simpsons with a similar plot "Raging Bender" from the second season of Futurama also depicts a hidden human controller of a robotic boxer. References DeVoe, Bill. (2008). Trivia from The Twilight Zone. Albany, GA: Bear Manor Media. Grams, Martin. (2008). The Twilight Zone: Unlocking the Door to a Television Classic. Churchville, MD: OTR Publishing. Zicree, Marc Scott: The Twilight Zone Companion''. Sillman-James Press, 1982 (second edition) External links 1963 American television episodes Adaptations of works by Richard Matheson Boxing mass media Television episodes written by Richard Matheson Television shows based on short fiction The Twilight Zone (1959 TV series season 5) episodes Television episodes about robots Fiction set in 1974