(written from a Production point of view)
He may be best remembered for his role as "Dr. Seneca Beaulac" in the television soap opera Ryan's Hope (1975-1985, 1988-1989), co-starring Star Trek: Voyager actress Kate Mulgrew. He also had a recurring role as "Andy Rivers" on The Mary Tyler Moore Show, and appeared twice as "Dr. Dan Gifford" on The Untouchables. One of the more notable roles of his career is the one he didn't get – he was cast as the Professor in the pilot of Gilligan's Island, but when the series was picked up, the role was re-cast with Russell Johnson.
In 1958, he had a small role in the musical South Pacific, which co-starred TNG guest star Ray Walston and fellow TOS guest star France Nuyen. The same year, he appeared in The Young Lions, which also featured Dean Martin and Trek alumni Parley Baer, Hal Baylor, Paul Comi, Robert Ellenstein, Sam Gilman, and Michael Pataki. He also appeared in the 1966 Westerns El Dorado (with John Wayne, Paul Fix, Adam Roarke, and Victoria George) and Stagecoach (with Brad Weston, Oliver McGowan, Bruce Mars, and Hal Lynch). Other film credits include Red Line 7000 (1965, with George Takei, Marianna Hill, and Teri Garr), Oh! What a Lovely War (1969, with Maurice Roëves), and Just Tell Me What You Want (1980, with Peter Weller and John Walter Davis).