Jack Warden

 played Rex Barker, a client whom Samantha turns into a dog, in the first season episode, It Shouldn't Happen to a Dog (1964).

Biography
Jack Warden was born as John Warden Lebzelter, Jr. He was an American actor who specialized in character roles on the large and small screen. His gruff exterior was ideally suited for roles in which he was cast as a cop, a coach or a military man. Warden’s breakthrough film role was as juror number seven in the star-studded 12 Angry Men (1957), in which he portrayed an impatient salesman looking for a quick verdict so that he could attend a baseball game.

Other notable films included The Bachelor Party (1957), The Apprenticeship of Duddy Kravitz (1974), All the President’s Men (1976), Being There (1979), Bullets over Broadway (1994) and two for which he earned Academy Award nominations for best supporting actor—Shampoo (1975) and Heaven Can Wait (1978). Besides starring on numerous television shows, including Mr. Peepers (1952–55), The Twilight Zone: The Lonely (1959), The Wackiest Ship in the Army (1965), N.Y.P.D. (1967–69), The Bad News Bears (1979) and Crazy like a Fox (1984–86), Warden won an Emmy Award for his performance as coach George Halas in the made-for-television movie Brian’s Song (1971). His last film was The Replacements (2000).