David McCallum plays Dr. Donald "Ducky" Mallard, a medical examiner with the Naval Criminal Investigative Service. As a result of constantly dealing with death, he has developed a somewhat dark sense of humour.

David McCallum David McCallum was born in Scotland and came to America in 1961. His credits include over 30 books on tape and CD, and his portrayal of Illya Kuryakin in "The Man from U.N.C.L.E.," for which he received two Emmy Award nominations.

Television: His many television appearances include "Sapphire and Steel," "Colditz," "Trainer," "The Education of Max Bickford," on CBS, "VR5," "Motherlove," "Kidnapped," "The Invisible Man," and episodes of "The Outer Limits," "Law & Order," "Sex and the City."

Film: His feature film credits include: "The Greatest Story Ever Told," "The Great Escape," "Mosquito Squadron," "Billy Budd," "Freud" and "A Night to Remember." In the Disney animated series "The Replacements," he is the voice of the very unconventional family car.

McCallum lives in New York City with his wife, Katherine, an interior designer. They have a son and a daughter. He has two sons by a previous marriage and four grandchildren. His birth date is Sept. 19.

'"I find it absolutely fascinating and I’m becoming a little bit obsessed with it" - David McCallum on his medical examiner role on NCIS.