Godina/e | Naslov serije ili filma | Naslov epizode | Uloga |
1961 | Sir Francis Drake | "The English Dragon" | Lord Oakshott |
1963 | The Outer Limits | "The Sixth Finger" | Gwyllm Griffiths |
1964 | The Outer Limits | "The Forms of Things Unknown" | Tone Hobart |
The Great Adventure | "Kentucky's Bloody Ground" | Captain Hanning |
The Great Adventure | "The Siege of Boonesborough" | Kapetan Hanning |
Profiles in Courage | "John Adams" | John Adams |
Perry Mason | "The Case of the Fifty-Millionth Frenchman" | Phillipe Bertain |
The Travels of Jaimie McPheeters | "The Day Of The Search" | Prorok |
1964-1968 | The Man from U.N.C.L.E. | (stalni član postave) | Illya Kuryakin |
1966 | Please Don't Eat the Daisies | "Say U.N.C.L.E." | Illya Kuryakin |
1969 | Hallmark Hall of Fame | "Teacher, Teacher" | Hamilton Cade |
Hallmark Hall of Fame | "The File On Devlin" | Kenneth Canfield |
1971 | Night Gallery | "The Phantom Farmhouse" | Dr. Joel Winter |
The Man and the City | "Pipe Me A Loving Tune" | |
1972 | Colditz | (TV movie) | Poručnik Simon Carter |
1973 | Frankenstein: The True Story | (TV film) | Henry Clerval |
The Six Million Dollar Man | "Wine, Women and War" | Alexi Kaslov |
1975-1976 | The Invisible Man | (stalni član postave) | Daniel Westin |
1979 | Kidnapped | | |
1979-1982 | Sapphire & Steel | | Steel |
1982 | Strike Force | "Ice" | William Hadley |
1983 | As the World Turns | | |
The Return of the Man from U.N.C.L.E. | (TV film) | Illya Kuryakin |
1984 | The Master | "Hostages" | Castile |
1986 | Hammer House of Mystery and Suspense | "The Corvini Inheritance" | Frank Lane |
Hart to Hart | "Haunted Harts" | Geoffrey Atterton |
The A-Team | "The Say U.N.C.L.E. Affair" | Ivan |
1987 | Matlock | "The Billionaire" | Phil Dudley |
1988 | Alfred Hitchcock Presents | "Murder Party" | |
Monsters (TV serija) | "The Feverman" | the fever man |
1989 | Murder, She Wrote | "From Russia...With Love" | Cyril Grantham |
Mother Love | | Sir Alexander "Alex" Vesey |
McCloud (TV serija) | "The Return of Sam McCloud" | Inspektor Craig |
1990 | Boon | "The Belles of St. Godwalds" | Simon Bradleigh |
Lucky/Chances | (miniseries) | |
Father Dowling Mysteries | | |
Murder, She Wrote | "Deadly Misunderstanding" | Drew Garrison |
1991 | Trainer | | John Grey |
Cluedo | | Professor Plum |
1993 | seaQuest DSV | "seaWest" | Frank Cobb |
1994 | Babylon 5 | "Infection" | Dr. Vance Hendricks |
Titanic: The Complete Story | | Narrator |
Heartbeat | "Arms and the Man" | Cooper |
1995 | VR-5 | | Dr. Joseph Bloom |
1996 | Mr. & Mrs. Smith | "The Impossible Mission" | Ian Felton |
1997 | Law & Order | "Past Imperfect" | Craig Holland |
The Outer Limits | "Feasibility Study" | Joshua Hayward |
1997-1998 | Team Knight Rider | | Mobius |
1998 | Coming Home | (TV serial) | |
1999 | Sex and the City | "Shortcomings" | Duncan |
2000 | Deadline | "Lovers and Madmen" | Harry Hobbs |
2001 | The Education of Max Bickford | | Walter Thornhill |
2002 | Jeremiah (TV serija) | "Things Left Unsaid" | Clarence |
2003 | JAG | "Ice Queen (1), Meltdown (2)" | Donald "Ducky" Mallard |
2003-Present | NCIS | (every episode) | Donald "Ducky" Mallard |
2006-2009 | The Replacements | | The voice of C.A.R. |
2008-09 | Ben 10: Alien Force | "Paradox" and "War of the Worlds" | Paradox |
2009 | Batman: The Brave and the Bold | "Day of the Dark Knight!" | Merlin Ambrosius |