In addition to Hill Street Blues, Martin made guest appearances on various television shows between the late 1960s through the 1980s, including The Love Boat, The Virginian, Father Dowling Mysteries, and Murder, She Wrote. He starred in the short-lived 1987 Fox sitcom Second Chance until its revamping as Boys Will Be Boys resulted in his character being dropped. He also was a regular on The Edge of Night.