He was a more interesting character than Burns. You must be way too young to remember the movie with Donald Sutherland as Hawkeye, Elliot Gould as Trapper, Robert Duval as Burns and Sally Kellerman as Hot Lips.
The thing about movies is you can watch them years later. So even if you were born in the 1990s, you wouldn't necessarily be too young to remember a film from the 1970s.