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 ''M*A*S*H'', as well as the TV series. He was a regular on television game show ''Match Game'' from 1974 to 1979 for 204 episodes, standing in for Charles Nelson Reilly, who was in New York doing a Broadway play, and continued to make recurring appearances afterwards.
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