2020'Fail-Safe' and the Cold War— Self (archive footage)
2000Revisiting 'Fail-Safe'— Self
2000Buñuel en Hollywood— Self
1998The Rat Pack— Joe Kennedy
1993Love, Cheat & Steal— Hamilton Fisk
1990RoboCop 2— The Old Man
1988A Waltz Through the Hills— Uncle Tom
1987Ölüler— Mr. Browne
1986The Whoopee Boys— Judge Sternhill
1986Dark Mansions— Alexander Drake
1984Son Yıldız Savasçısı— Grig
1982Cadılar Bayramı 3: Cadı Mevsimi— Conal Cochran
1981Death Ray 2000— The Director
1981Artemis '81— Albrecht Von Drachenfels
1979Mark Twain: Beneath the Laughter— Mark Twain
1977MacArthur— President Roosevelt
1977Deadly Game— Colonel Edward Stryker
1977Good Against Evil— Father Kemschler
1976The Quest: The Longest Drive— Mathew Hatcher
1976Banjo Hackett: Roamin' Free— Tip Conaker
1974The Tamarind Seed— Fergus Stephenson
1974Jennie: Lady Randolph Churchill— Leonard Jerome
1972The Carey Treatment— J.D. Randall
1972The People— Sol Diemus
1970Waterloo— Marshal Michel Ney
1969100 Tüfek— Steven Grimes
1969The Big Cube— Charles Winthrop
1968How to Steal the World— Prof. David Garrow
1962The Cabinet of Caligari— Caligari / Paul
1961King of the Roaring 20's – The Story of Arnold Rothstein— Detective Phil Butler
1960One Foot in Hell— Sir Harry Ivers
1960A Terrible Beauty— Don McGinnis
1959Zehirli hayat— David Edwards
1959The Young Land— Judge Millard Isham
1958Home Before Dark— Arnold Bronn
1957That Woman Opposite— Dermot Kinross
1957The Blackwell Story— Dr. Keller
1955The Virgin Queen— Lord Derry
1955The Purple Mask— Brisquet
1955Hunters of the Deep— Narrator
1954The Black Shield of Falworth— Prince Hal of Wales
1954Robinson Crusoe— Robinson Crusoe
1954Bengal Brigade— Capt. Ronald Blaine (as Daniel O'Herlihy)
1953Sword of Venus— Danglars
1952Invasion, U.S.A.— Mr. Ohman
1952Actors and Sin— Alfred O'Shea / Narrator (segment Actor's Blood)
1952At Sword's Point— Aramis Jr.
1952Operation Secret— Lt. Duncan
1951The Desert Fox: The Story of Rommel— Commando Captain (uncredited)
1951The Blue Veil— Hugh Williams
1951Soldiers Three— Sgt.Murphy
1951The Highwayman— Robin
1950The Iroquois Trail— Lt. Blakely
1948Larceny— Duke
1948Macbeth— Macduff
1948Kidnapped— Alan Breck
1947Ölümden Kuvvetli— Nolan
1947Hungry Hill— Harry Brodrick
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