Greenboy: Prescription for Death2013 · Bill Gannon (archive footage)
M*A*S*H: 30th Anniversary Reunion2002 · Himself
The Shootist: The Legend Lives On2001 · Self (archive footage) (uncredited)
Martin Kane, Private Eye1997 · Sol Rubins
The Dark Knight1996 · Professor Suter
The Jeff Foxworthy Show1995
Incident in a Small Town1994 · Judge Bell
Against Her Will: An Incident in Baltimore1992 · Judge Stoddard Bell
Memories of M*A*S*H1991 · Self / Sherman Potter
The Incident1990 · Judge Bell
The Simpsons1989 · Bill Gannon (voice)
14 Going on 301988 · Uncle Herb
Circus of Horrors1987 · Martin Vanderhof
Dragnet1987 · Captain Gannon
Blacke's Magic1986 · Leonard Blacke
Murder, She Wrote1984 · Retired Lt. Richard Webb
Sparkling Cyanide1983 · Captain Kemp
AfterMASH1983 · Sherman T. Potter
Showbiz Goes to War1982 · Self (archive footage)
The Flight of Dragons1982 · Carolinus (voice)
Rivkin: Bounty Hunter1981 · Father Everett Kolodny
Making 'M*A*S*H'1981 · Self
More Wild Wild West1980 · Robert T. 'Skinny' Malone
Scout's Honor1980 · Mr. Briggs
Roughnecks1980 · Plug Champion
Better Late Than Never1979 · Mr. Scott
The Apple Dumpling Gang Rides Again1979 · T.P. Gaskill
You Can't Take it With You1979 · Mr. DePinna
Die Katze im Sack1979 · Robert T. Malone
Roots: The Next Generations1979 · Bob Campbell
Backstairs at the White House1979 · Pres. Harry S. Truman
The Cat from Outer Space1978 · General Stilton
Kate Bliss and the Ticker Tape Kid1978 · Hugo Peavey
The Bastard1978 · Capt. Caleb
Murder at the Mardi Gras1978 · Jim Bob Jackson
Maneaters Are Loose!1978 · Toby Waites
Confessions of the D.A. Man1978
The Apple Dumpling Gang1975
Hec Ramsey1972 · Doc Amos Coogan
M*A*S*H1972 · Colonel Sherman T. Potter
Ellery Queen: Don't Look Behind You1971
The Barefoot Executive1971
Support Your Local Gunfighter1971
Dragnet1967 · Officer Bill Gannon
The Glenn Miller Story1954
December Bride1954 · Pete Porter
From This Day Forward1946
It Shouldn't Happen to a Dog1946
