David McCallum

David Keith McCallum, Jr. was a British actor and musician. He first gained recognition in the 1960s for playing secret agent Illya Kuryakin in the television series The Man from U.N.C.L.E.. In recent years, McCallum has gained renewed international recognition and popularity for his role as NCIS medical examiner Dr. Donald "Ducky" Mallard in the American television series NCIS.
Early roles included a juvenile delinquent in Violent Playground (1957), an outlaw in Robbery Under Arms, (1957) and as junior RMS Titanic radio operator Harold Bride in A Night to Remember (1958). His first American film was Freud: The Secret Passion (1962), which was shortly followed by a role in Peter Ustinov's Billy Budd. McCallum played Lt Cdr Eric Ashley-Pitt (a.k.a., "Dispersal") in The Great Escape, which was released in 1963. He took the role of Judas Iscariot in 1965's The Greatest Story Ever Told. Other television roles included two appearances on The Outer Limits and a guest appearance on Perry Mason in 1964 as defendant Phillipe Bertain in "The Case of the Fifty Millionth Frenchman".
McCallum co-starred in The Man From U.N.C.L.E. as Illya Kuryakin (1964 -1968).
McCallum never quite repeated the popular success he had gained as Kuryakin until NCIS, though he did become a familiar face on British television in such shows as Colditz (1972–74), Kidnapped (1978), and ITV's science-fiction series Sapphire & Steel (1979–82) opposite Joanna Lumley. In 1975 he played the title character in a short-lived U.S. version of The Invisible Man.
McCallum appeared on stage in Australia in Run for Your Wife (1987–88), and the production toured the country.
McCallum played supporting parts in a number of feature films, although he played the title role in the 1968 thriller, Sol Madrid.
McCallum starred with Diana Rigg in the 1989 TV miniseries Mother Love. In 1991 and 1992 McCallum played gambler John Grey, one of the principal characters in the television series Trainer. He appeared as a British double agent in a 1989 episode of Murder, She Wrote. In the 1990s McCallum guest-starred in two U.S. television series, seaQuest DSV and Babylon 5.
Since 2003 McCallum starred in the CBS television series NCIS as Dr. Donald "Ducky" Mallard, the team's chief medical examiner and one of the show's most popular characters.