Complex sentence: One of his biggest acting roles was as a regular on the TV show revival of "Maverick" called "Bret Maverick" starring James Garner during the 1981-1982 season on NBC.
Split into simpler sentences: One of his biggest acting roles was as a regular on the TV show revival of "Maverick", called "Bret Maverick". The show starred James Garner, and was on during the 1981-1982 season on NBC.