These included his popular roles as Bret Maverick in the 1950s western-comedy series , Maverick , and Jim Rockford in the 1970s detective drama , The Rockford Files .
He has acted in several television series in a career of more than fifty years , including his roles as Bret Maverick in the popular 1950s western-comedy series , Maverick and Jim Rockford in the popular 1970s detective drama , The Rockford Files .