 Based primarily in New York, Smith frequently appeared on early television programs and was a regular on a live sitcom, "The Hartmans", starring the married comic actors and dancers Paul and Grace Hartman, playing supposedly "themselves" as a suburban married couple, beset by various amusing tribulations, including an obnoxious brother-in-law, portrayed by Smith.He also appeared on the West End stage in London, starring opposite Mary Martin in the original London production of "Hello, Dolly!