Klugman began his career in 1950. He later moved on to television and film work with roles in 12 Angry Men (1957) and Cry Terror! (1958). During the 1960s, he guest-starred on numerous television series. Klugman won his first Primetime Emmy Award for his guest-starring role on The Defenders, in 1964. He also made a total of four appearances on The twilight Zone from 1960 to 1963.
In 1970, Klugman reprised his Broadway role of Oscar Madison in the television adaptation of The Odd Couple, opposite Tony Randall. The series aired from 1970 to 1975. Klugman won his second and third Primetime Emmy Awards and a Golden Globe Award for his work on the series. From 1976 to 1983, he starred in the title role in Quincy, M.E. for which he earned four Primetime Emmy Award nominations. In 1985, he appeared in an episode of The Love Boat entitled "Scandinavian Cruise" parts one and two. - WIKIPEDIA