Gary Burghoff

Gary Richard Burghoff (born May 24, 1943) is an American actor, known for playing the character Corporal Walter Eugene "Radar" O'Reilly in the MAS*H series and Charlie Brown in the 1967 Off-Broadway musical You're a Good Man, Charlie Brown. Description above from the Wikipedia article Gary Burghoff, licensed under CC-BY-SA, full list of contributors on Wikipedia.