Acting

2020

as Self (archive footage)

2000

as Self

1998

as Joe Kennedy

1993

as Hamilton Fisk

1990

as The Old Man

1988

as Uncle Tom

1987		The Dead as Mr. Browne
1987		RoboCop as The Old Man

1986		Dark Mansions as Alexander Drake
1986		The Whoopee Boys as Judge Sternhill

1984

as Grig

1982

as Conal Cochran

1981		Artemis '81 as Albrecht Von Drachenfels
1981		Death Ray 2000 as The Director

1979

as Mark Twain

1977		Deadly Game as Colonel Edward Stryker
1977		MacArthur as President Roosevelt
1977		Good Against Evil as Father Kemschler

1976		Banjo Hackett: Roamin' Free as Tip Conaker
1976		The Quest: The Longest Drive as Mathew Hatcher

1974		Jennie: Lady Randolph Churchill as Leonard Jerome
1974		The Tamarind Seed as Fergus Stephenson

1972		The Carey Treatment as J.D. Randall
1972		The People as Sol Diemus

1970

as Marshal Michel Ney

1969		The Big Cube as Charles Winthrop
1969		100 Rifles as Steven Grimes

1964

as Brig. Gen. Warren A. Black

1963

as Simon Carter

1962

as Caligari / Paul

1961

as Detective Phil Butler

1960		One Foot in Hell as Sir Harry Ivers
1960		A Terrible Beauty as Don McGinnis

1959		Imitation of Life as David Edwards
1959		The Young Land as Judge Millard Isham

1958

as Arnold Bronn

1957

as Dermot Kinross

1955		The Virgin Queen as Lord Derry
1955		The Purple Mask as Brisquet
1955		Hunters of the Deep as Narrator

1954		Bengal Brigade as Capt. Ronald Blaine (as Daniel O'Herlihy)
1954		The Black Shield of Falworth as Prince Hal of Wales
1954		Robinson Crusoe as Robinson Crusoe

1953

as Danglars

1952		Invasion, U.S.A. as Mr. Ohman
1952		Operation Secret as Lt. Duncan
1952		Actors and Sin as Alfred O'Shea / Narrator (segment Actor's Blood)
1952		At Sword's Point as Aramis Jr.

1951		The Blue Veil as Hugh Williams
1951		The Desert Fox: The Story of Rommel as Commando Captain (uncredited)
1951		Soldiers Three as Sgt.Murphy

1950

as Lt. Blakely

1948		Kidnapped as Alan Breck
1948		Macbeth as Macduff
1948		Larceny as Duke

1947		Odd Man Out as Nolan
1947		Hungry Hill as Harry Brodrick