While his big screen work is limited to a small part in 1979's "10", Sheehan has starred in many TV-movies between his series roles, including performances as the new love of a woman whose head trauma renders her unable to remember anything from her life before the accident, including her husband and family, in the fact-based drama "Stranger in My Bed" (NBC, 1987); an FBI commander in the true crime TV movie "In the Line of Duty: The FBI Murders" (NBC, 1988); a doomed pilot whose wife seeks to uncover the truth of the crash that took his life in the disaster drama "Crash: The Mystery of Flight 1501" (NBC, 1990); a single father who gets hooked up with mannequin turned would-be stepmom Olivia Newton-John in the holiday fantasy "A Mom for Christmas" (NBC, 1990); and a suspect in the 1993 ABC mystery "Columbo: It's All in the Game". Additionally, he has made notable guest appearances in series such as "Cheers" (NBC), "Dear John" (NBC), "MacGyver" (ABC), "Promised Land" (CBS) and "Style & Substance" (CBS).