Gary Burghoff

Gary Rich Burghoff (born May 24, 1943) is an American actor who is known for originating the role of Charlie Brown in the 1967 Off-Broadway musical You're a Good Man, Charlie Brown, and the character Corporal Walter Eugene "Radar" O'Reilly in the film MASH, as well as the TV series. He was a regular on the hit TV game show Match Game during a period from 1974 - 1975 (beginning at episode 331) for 140 episodes, standing in for Charles Nelson Reilly who was in New York doing a Broadway play.