Tom Selleck. The actor and producer started out by support- ing himself as a model. This led to small parts in film and television during the 1970s. In 1979, he was cast in the starring role of CBS's detective series Magnum, PI, in which he played an easy-going private investigator. He continued with the role for eight years. In 1987, he appeared in the hugely popular Three Men and a Baby alongside Ted Danson and Steve Guttenberg. He has also made appearances in 1997's In and Out and 1999's The Love Letter. Selleck has tried his hand at producing and enjoyed a successful run as a recurring guest on the hit sitcom Friends.