He has played the father of sons Emilio Estevez and Charlie Sheen in various projects: he played Emilio's father in "The War at Home", "In the Custody of Strangers" and "The Way", and Charlie's father in "Wall Street", "No Code of Conduct", two episodes of "Spin City," and "Anger Management." He also appeared as a guest star in one episode of "Two and a Half Men" playing the father of Charlie's neighbor Rose (Melanie Lynskey), and another as guest star Denise Richards's father; at the time that episode aired, Richards was married to Charlie. Martin also played a "future" version of Charlie in a Visa commercial. Martin has played other characters with his children. He starred in the film "Bobby", which was directed by Emilio, who also starred in the movie alongside his father. Renée had a supporting role in "The West Wing", as a White House staff secretary. Emilio also appeared, uncredited, in an episode of "The West Wing" portraying his father's character, President Bartlet, in home movie footage.