Movie/Stage/Television (Indicate which one)
| Title
| Role
| Dates / Number of Episodes
| Episode # and Titles (If applicable)
|
| Video | Wonder Woman | Voice of Zeus | 2009 |
|
| Video | Batman: The Brave and the Bold Batman: Gotham Night
| Voice of Merlin
Voice of Alfred Pennyworth
| 2008
2008
| Day of the Dark Knight
|
| Soundtrack | Nip/Tuck | Performer | 2008 / 1 episode | Lulu Grandiron - "The Edge" |
| Television (Series) | The Story of the Costume Drama | Himself | 2008 / 1 episode | A Call to Arms |
| Television (Series) | Ben 10: Alien Force | Voice of Paradox | 2008-2010 / 4 episode | Paradox - ongoing
|
| Video | Counting Out Time | Himself | 2007 |
|
| Television (Series) | The Replacements | Voice of C.A.R. | 2006 - 2010 / 69 episodes | ongoing
|
| Television (Series) | NCIS | Dr. Donald "Ducky" Mallard | 2003 - 2010 / 162 episodes | ongoing
|
| Television (Series) | CBS Cares | Himself | 2003 / 1 episode | Episode #3.1 |
| Television (Series) | JAG | Dr. Donald "Ducky" Mallard | 2003 / 2 episodes April 22, 2003 April 29, 2003 | Ice Queen (Season 8) Meltdown (Season 8) |
| Television (Series) | Taboo II | Narrator | 2003 / 4 episodes | After Death Body Perfect Creature Cures Delicacies |
| Television (Series) | Jeremiah | Clarence | 2002 / 1 episode July 12, 2002 | Things Left Unsaid (1.19) |
| Soundtrack | xXx | Performer | 2002 | "Mellow Yellow" |
| Television | RIP 2002 | Himself / Interviewee | 2002 | A tribute to those who died in 2002.
|
| Television (Series) | Taboo | Narrator | 2002 / 1 episode | Tattoo |
| Television (Series) | The Education of Max Bickford | Walter Thornhill | 2001 - 2002 / 9 episodes |
|
| Television (Series) | Deadline | Harry Hobbs | 2000 / 1 episode | Lovers and Madmen |
| Television (Series) | Sex and the City | Duncan | 1999 / 1 episode | Shortcomings |
| Movie | Cherry | Mammy | 1999 |
|
| Documentary | The Titanic Chronicles | Host / Narrator | 1999 |
|
Television
| Beyond Titanic
| Himself
| 1998 |
|
| Television | Coming Home | Billy Fawcett | 1998 |
|
| Television (Series) | Three | Donald Scobie | 1998 / 1 episode | Hope |
| Television | March in Windy City | Daniel Paterson / Dimitri Petrovsky | 1998 |
|
| Television (Series) | Team Knight Rider | Mobius | 1997-1998 / 5 episodes |
|
| Television (Series) | The Outer Limits | Joshua Hayward | 1997 / 1 episode | Feasibility Study |
| Television (Series) | Law & Order | Craig Holland | 1997 / 1 episode | Past Imperfect |
Television (Series)
| Ancient Mysteries
| Narrator
| 1996 / 2 episodes
| Naked Warriors of Europe Secret Mounds of Prehistoric America
|
| Television (Series) | Mr. & Mrs. Smith | Ian Felton | 1996 / 1 episode | The Impossible Mission Episode |
| Television | Death Game | Malius | 1996 |
|
| Video Game | Privateer 2: The Darkening | Voice of Canera Captain | 1996 |
|
| Television (Series) | VR.5 | Doctor Joseph Bloom | 1995-1997 / 7 episodes |
|
| Television (Series) | Heartbeat | Cooper | 1994 / 1 episode | Arms and the Man |
| Television (Series) | Babylon 5 | Dr. Vance Hendricks | 1994 / 1 episode | Infection |
| Television | Shattered Image | Ben Allgood | 1994 |
|
| Television (Series) | Aranyifjú, Az | Himself | 1994 (Hungarian) | Documentary translation
|
| Television | Titanic: The Legend Lives On | Narrator | 1994 | A series that probes unanswered questions.
|
| Television | Ancient Prophecies | Host | 1994 | Phychic, The future, Gordon Scallion, Religion. |
| Movie | Healer | The Jackal | 1994 |
|
| Movie | Dirty Weekend | Reggie | 1993 |
|
| Movie | Fatal Inheritance | Brandon Murphy | 1993 |
|
| Video | Return to 'The Great Escape' | Himself | 1993 | Documentary on the "Real" escape from Stalag.
|
| Television (Series) | SeaQuest DSV | Frank Cobb | 1993 / 1 episode | SeaWest |
| Television (Series) | Trainer | John Grey | 1991-1992 / 23 episodes |
|
| Television (Series) | Cluedo | Prof. Plum | 1991 / 6 episodes |
|
| Movie | Hear My Song | Jim Abbott | 1991 |
|
| Television | Children In Need | Himself | 1991 November 22, 1991 | 2 parts |
| Movie | The Haunting of Morella | Gideon | 1990 |
|
| Television (Series) | Boon | Simon Bradleigh | 1990 / 1 episode | The Belles of St. Godwalds |
| Television | Lucky Chances | Bernard Dimes | 1990 |
|
| Television (Series) | Murder, She Wrote | Cyril Grantham | 1989-1990 / 2 episodes | Deadly Misunderstanding. From Russia... with Blood |
| Television (Series) | Father Dowling Mysteries | Sir Robert | 1990 / 1 episode | The Royal Mystery |
| Television | The Return of Sam McCloud | Inspector Craig | 1989 |
|
| Television (Mini-Series) | Mother Love | Sir Alexander Alex Vesey | 1989 |
|
| Television (Series) | Monsters | Boyle | 1988 / 1 episode | The Feverman |
| Television (Series) | Alfred Hitchcock Presents | Lieutenant Cavanaugh | 1988 / 1 episode | Murder Party |
| Television | Freedom Fighter | Sergeant Kemper | 1988 |
|
| Television | The Man Who Lived at the Ritz | Charlie Ritz | 1988 |
|
| Video | The Wind | Voice of John | 1987 |
|
| Television (Series) | Matlock | Phil Dudley | 1987 / 1 episode | The Billionaire |
| Television (Series) | The A-Team | Ivan | 1986 / 1 episode | The Say U.N.C.L.E. Affair |
| Television (Series) | Hammer House of Mystery and Suspense | Frank Lane | 1986 / 1 episode | The Corvini Inheritance |
| Television (Series) | Aranyifjú, Az | Himself | 1986 (Hungarian) |
|
| Television | Behind Enemy Lines | Lt. Col. Shelley Flynn | 1985 |
|
| Television | Those Golden Years | Himself | 1985 |
|
| Movie | Terminal Choice | Dr. Giles Dodson | 1985 |
|
| Television (Series) | The Master | Castile | 1984 / 1 episode | Hostages |
| Television (Series) | As the World Turns | Maurice Vermeil | 1983 / unknown episodes |
|
| Television | The Return of the Man from U.N.C.L.E.: The Fifteen Years Later Affair | Illya Kuryakin | 1983 |
|
| Television (Series) | Hart to Hart | Geoffrey Atterton | 1983 / 1 episode | Hunted Harts |
| Television (Series) | Strike Force | William Hadley | 1982 / 1 episode | Ice |
| Movie | The Watcher in the Woods | Paul Curtis | 1980 |
|
| Television (Series) | Sapphire & Steel | Steel | 1979-1982 / 34 episodes |
|
| Television (Mini-Series) | Kidnapped | Alan Breck Stewart | 1978 |
|
| Movie | King Solomon's Treasure | Sir Henry Curtis | 1977 |
|
| Movie | Dogs | Harlan Thompson | 1976 |
|
| Television (Series) | Bert D'Angelo / Superstar | Cobb | 1976 / 1 episode | A Noise in the Streets |
| Television (Series) | The Invisible Man | Dr. Daniel Westin | 1975-1976 / 12 episodes |
|
| Movie | The Kingfisher Caper | Benedict | 1975 |
|
| Television (Series) | Today | Himself | 1975 / 1 episode | Episode dated 1 May 1975 |
| Television | Frankenstein: The True Story | Dr. Henry Clerval | 1973 |
|
| Television | The Six Million Dollar Man: Wine, Women and War | Alexi Kaslov | 1973 |
|
| Television | Screaming Skull | Mickey
| 1973 |
|
| Television (Series) | Colditz Flight | Lt. Simon Carter | 1972-1974 / 27 episodes |
|
| Television (Series) | Marcus Welby, M.D. | Brian Kenny
| 1972 / 1 episode | Just a Little Courage |
| Television | She Waits | Mark Wilson | 1972 |
|
| Television (Series) | The Man and the City | (unknown)
| 1971 / 1 episode | Pipe Me a Loving Tune |
| Television (Series) | Night Gallery | Dr. Joel Winter | 1971 / 1 episode | The Phantom Farmhouse |
| Television | Hauser's Memory | Hillel Mondoro | 1970 |
|
| Movie | Cattura, La | Sgt. Stephan Holmann | 1969 |
|
| Movie | Mosquito Squadron | Quint Munroe | 1969 |
|
| Television (Series) | Hallmark Hall of Fame | Hamilton Cade | 1969 / 1 episode | Teacher, Teacher |
| Television (Series) | Hallmark Hall of Fame | Kenneth Canfield | 1969 / 1 episode | The File on Devlin |
| Television (Series) | Vergißmeinnicht | Himself | 1968 / 1 episode | Episode dated 11 January 1968 |
| Movie | Sol Madrid | Sol Madrid | 1968 |
|
| Soundtrack | Three Bites of the Apple | Performer | 1967 | "In The Garden Under The Tree" |
| Movie | Three Bites of the Apple | Stanley Thrumm | 1967 |
|
| Documentary | Italy's in Season | Himself | 1967 | filming Three Bites in the Apple |
| Documentary | Around the World Under the Sea | Himself | 1966 |
|
| Documentary | The World of Inner Space | Himself | 1966 |
|
| Movie | Around the World Under the Sea | Dr. Philip Volker | 1966 |
|
| Movie | One Spy Too Many | Illya Kuryakin | 1966 |
|
| Soundtrack | The Big T.N.T. Show | Performer | 1966 | "(I Can't Get No) Satisfaction" "One, Two, Three (1-2-3)" |
| Documentary | The Big T.N.T. Show | Himself/Host | 1966 |
|
| Television (Series) | Hullabaloo | Himself | 1966 / 1 episode | Episode dated 25 April 1966 |
| Televsion | An Evening with Carol Channing | Himself | 1966 | Musical/T.V. special
|
| Television (Series) | Please Don't Eat the Daisies | Illya Kuryakin | 1966 / 1 episode | Say UNCLE |
| Television (Series) | Hullabaloo | Himself / Host | 1965 / 1 Episode September 27, 1965 | Season 2, Episode 21 Musical variety show.
|
| Television (Series) | The Andy Williams Show | Himself | 1965 / 1 episode | Episode dated 20 September 1965 |
| Television (Series) | Hullabaloo | Illya Kuryakin | 1965 / 1 episode | Season 2, Episode 3 |
| Movie | The Greatest Story Ever Told | Judas Iscariot | 1965 |
|
| Television (Series) | The Man from U.N.C.L.E. | Illya Kuryakin | 1964-1968 / 101 episodes |
|
| Television (Series) | Profiles in Courage | John Adams | 1964 / 1 episode | John Adams |
| Television (Series) | The Outer Limits | Tone Hobart | 1964 / 1 episode | The Forms of Things Unknown |
| Television (Series) | The Great Adventure | Captain Hanning | 1964 / 2 episodes | The Siege of Boonesborough Kentucky's Bloody Ground |
| Television (Series) | Perry Mason | Phillipe Bertain | 1964 / 1 episode | The Case of the Fifty-Millionth Frenchman |
| Television (Series) | The Travels of Jaimie McPheeters | Prophet | 1964 / 1 episode | The Day of the Search |
| Movie | The Great Escape | Lt. Cmdr. Eric Ashley-Pitt Dispersal | 1963 |
|
| Television (Series) | The Outer Limits | Gwyllim Griffiths | 1963 / 1 episode | The Sixth Finger |
| Television | Wuthering Heights | Edgar | 1962 |
|
| Movie | Freud | Carl von Schlossen | 1962 |
|
| Movie | Billy Budd | Steven Wyatt, Gunnery Officer | 1962 |
|
| Movie | The Long and the Short and the Tall | Pvt. Sammy Whitaker | 1961 |
|
| Movie | Jungle Street | Terry Collins | 1961 |
|
| Television (Series) | Sir Francis Drake | Lord Oakeshott | 1961 / 1 episode | The English Dragon |
| Television (Series) | Armchair Theatre | (unknown)
| 1960 / 1 episode | S3 Ep.89 - On the Spot |
| Television | Emma | Frank Churchill | 1960 / 5 episodes
|
|
| Television (Series) | ITV Play of the Week | Rainbow | 1960 / 1 episode | The Pot Carriers |
| Television (Series) | ITV Television Playhouse | Robert | 1960 / 1 episode | The Unquiet Spirit |
| Television (Series) | Juke Box Jury | Himself - Panellist | 1960 / 2 episode | Episode dated 10 December 1960 Episode dated 3 December 1960 |
| Television (Series) | Armchair Theatre | (unknown)
| 1959 / 1 episode | S 3 Ep.33 -The Shadow of the Ruthless |
| Television (Series) | BBC Sunday-Night Theatre | Hugo | 1959 / 1 episode | Crime Passionnel |
| Television (Series) | ITV Play of the Week | Henry Antrobus | 1959 / 1 episode | The Skin of Our Teeth |
| Television (Series) | The Eustace Diamonds | Frank Greystock | 1959/ 6 episodes |
|
| Television (Series) | Our Mutual Friend | Eugene Wrayburn Barrister.
| 1958-1959 / 10 episodes | Chapters:The Cup & The Lip, Birds of A Feather, A long lane, A Turning.
|
| Television (Series) | ITV Television Playhouse | Agent | 1958 / 1 episode | Cry Silence |
| Movie | A Night to Remember | Assistant Wireless Operator Harold Bride | 1958 |
|
| Movie | Violent Playground | Johnnie Murphy | 1958 |
|
| Movie | Robbery Under Arms | Jim Marston | 1957 |
|
| Movie | Hell Drivers | Jimmy Yately, Tom's brother | 1957 |
|
| Movie | These Dangerous Years | (uncredited) | 1957 |
|
| Movie | The Secret Place | Mike Wilson | 1957 |
|
| Movie | Ill Met by Moonlight | Sailor on Pick Up Ship (uncredited) | 1957 |
|
| Television (Series) | ITV Television Playhouse | James | 1956 / 1 episode | The Blood Is Strong |