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 MASH 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.
M*A*S*H
(Cpl. 'Radar' O'Reilly)
W*A*L*T*E*R
(Walter 'Radar' O'Reilly)
Casino
(Bill Taylor)
Behind the Waterfall
(Mr. Connors)
Making 'M*A*S*H'
(Self)
Twigs
(The Priest)
M*A*S*H: The Comedy That Changed Television
(Self)
B.S. I Love You
(Ted)
The Man in the Santa Claus Suit
(Bob Willis)
The Real M*A*S*H
(Himself)
Small Kill
(Fleck / Lady Esmerelda)
M*A*S*H: 30th Anniversary Reunion
(Himself)
Memories of M*A*S*H
(Self / Radar O'Reilly)
Enlisted: The Story of 'M*A*S*H'
(Self)
Daniel's Lot
(Pastor Mahoney)
Altman on His Own Terms
(Self)
The Good Guys
The Love Boat
(Donald Flanders)
Tales of the Unexpected
(Harry Flock)
Donny & Marie
(Self)
Wonder Woman
(Alan)
Pets: Part of the Family
M*A*S*H
(Radar O'Reilly)
Dinah!
(Self)
Hollywood Squares
(Self - Panelist)
CHiPs
(Gary Burghoff (uncredited))
Burke's Law
(Patrick Noyes)
AfterMASH
(Radar O'Reilly)
The Love Boat
(Eddie Martin)
Fantasy Island
(Richard C. Delaney)
$weepstake$
(Roscoe Fuller)