highest rated
acting
- 'Fail-Safe' and the Cold War → Self (archive footage)
- Revisiting 'Fail-Safe' → Self
- Buñuel in Hollywood → Self
- The Rat Pack → Joe Kennedy
- VR.5 (TV) → Dr. Alloysius Hunnicutt
- Love, Cheat & Steal → Hamilton Fisk
- Batman: The Animated Series (TV) → Grant Walker (voice)
- Twin Peaks (TV) → Andrew Packard
- RoboCop 2 → The Old Man
- A Waltz Through the Hills → Uncle Tom
- RoboCop → The Old Man
- The Dead → Mr. Browne
- L.A. Law (TV) → Vernon Kepler
- The Whoopee Boys → Judge Sternhill
- Dark Mansions → Alexander Drake
- The Equalizer (TV) → Randall Payne
- The Ray Bradbury Theater (TV) → Charles Braling
- Murder, She Wrote (TV) → Alexander Preston
- Murder, She Wrote (TV) → Denton Langley
- The Last Starfighter → Grig
- The Secret Servant (TV) → Professor John Tyler
- Remington Steele (TV) → Charles Wellington
- Halloween III: Season of the Witch → Conal Cochran
- Nancy Astor (TV) → Chiswell 'Chillie' Langhorne
- Death Ray 2000 → The Director
- Artemis '81 → Albrecht Von Drachenfels
- Trapper John, M.D. (TV)
- A Man Called Sloane (TV)
- Mark Twain: Beneath the Laughter → Mark Twain
- Battlestar Galactica (TV) → Dr. Ravashol
- The Hardy Boys / Nancy Drew Mysteries (TV)
- MacArthur → President Roosevelt
- Deadly Game → Colonel Edward Stryker
- Good Against Evil → Father Kemschler
- Charlie's Angels (TV) → Freddie Brander
- The Bionic Woman (TV)
- Gibbsville (TV)
- The Quest: The Longest Drive → Mathew Hatcher
- Banjo Hackett: Roamin' Free → Tip Conaker
- QB VII (TV) → David Shawcross
- Jennie: Lady Randolph Churchill (TV) → Leonard Jerome
- Born Free (TV) → Archie Gordon
- The Tamarind Seed → Fergus Stephenson
- Jennie: Lady Randolph Churchill → Leonard Jerome
- Colditz (TV) → Lt. Col. Max Dodd
- The Carey Treatment → J.D. Randall
- The People → Sol Diemus
- Waterloo → Marshal Michel Ney
- 100 Rifles → Steven Grimes
- The Big Cube → Charles Winthrop
- Hawaii Five-O (TV) → Harry Wells
- How to Steal the World → Prof. David Garrow
- Ironside (TV) → Arthur Justin
- The High Chaparral (TV) → Jake Lanier
- Hondo (TV) → Prof. Phineas Blackstone
- Mission: Impossible (TV) → Jack Cole
- The Big Valley (TV) → David Wyncop
- The Long, Hot Summer (TV)
- The Man from U.N.C.L.E. (TV) → Marcel Rudolph
- The Man from U.N.C.L.E. (TV) → Capt. Rupert Oliver Morton
- Profiles in Courage (TV) → Professor Richard T. Ely
- Fail Safe → Brig. Gen. Warren A. Black
- Bob Hope Presents the Chrysler Theatre (TV)
- The Travels of Jaimie McPheeters (TV) → Dr. Sardius McPheeters
- The Alfred Hitchcock Hour (TV) → Simon Carter
- Combat! (TV) → Maj. Richter
- Sam Benedict (TV) → Hart Marbury
- The Cabinet of Caligari → Caligari / Paul
- Dr. Kildare (TV) → Mark Addison
- Dr. Kildare (TV) → John Patrick McHenry
- Dr. Kildare (TV) → Dr. Phillip Downey
- Dr. Kildare (TV) → Mark Sloan
- Ben Casey (TV)
- The Defenders (TV) → Governor William Defoe
- Target: The Corruptors! (TV)
- The Americans (TV) → Colonel Fry
- King of the Roaring 20's – The Story of Arnold Rothstein → Detective Phil Butler
- Route 66 (TV)
- Checkmate (TV) → Stephen Jordan
- A Terrible Beauty → Don McGinnis
- One Foot in Hell → Sir Harry Ivers
- Rawhide (TV) → John Cord
- Adventures in Paradise (TV) → Colonel Tomlinson
- The DuPont Show with June Allyson (TV) → David
- Imitation of Life → David Edwards
- The Young Land → Judge Millard Isham
- Home Before Dark → Arnold Bronn
- That Woman Opposite → Dermot Kinross
- The Blackwell Story → Dr. Keller
- Dick Powell's Zane Grey Theatre (TV) → Capt. Cleve Scott
- Screen Director's Playhouse (TV) → Dr. Donald Kent
- The Purple Mask → Brisquet
- The Virgin Queen → Lord Derry
- Hunters of the Deep → Narrator
- Climax! (TV) → Ian Hamilton
- The Black Shield of Falworth → Prince Hal of Wales
- Robinson Crusoe → Robinson Crusoe
- Bengal Brigade → Capt. Ronald Blaine (as Daniel O'Herlihy)
- The Oscars (TV) → Self
- Letter to Loretta (TV) → Dave Hardy
- General Electric Theater (TV)
- General Electric Theater (TV) → Dr. Paul Crowley
- General Electric Theater (TV) → Robert Burns
- Sword of Venus → Danglars
- Cavalcade of America (TV) → Nathaniel Hawthorne
- Cavalcade of America (TV) → Benedict Arnold
- At Sword's Point → Aramis Jr.
- Invasion, U.S.A. → Mr. Ohman
- Actors and Sin → Alfred O'Shea / Narrator (segment Actor's Blood)
- Operation Secret → Lt. Duncan
- Schlitz Playhouse of Stars (TV)
- The Desert Fox: The Story of Rommel → Commando Captain (uncredited)
- The Blue Veil → Hugh Williams
- Soldiers Three → Sgt.Murphy
- The Highwayman
- Lux Video Theatre (TV) → Alan
- Lux Video Theatre (TV) → Oliver Bradford
- Lux Video Theatre (TV) → Henry
- Lux Video Theatre (TV) → Trevelyan
- The Iroquois Trail → Lt. Blakely
- Macbeth → Macduff
- Larceny → Duke
- Kidnapped → Alan Breck
- Odd Man Out → Nolan
- Hungry Hill → Harry Brodrick