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Mark Harmon



Mark Harmon: Short Biography, Net Worth & Career Highlights



The Real Reason Mark Harmon Left NCIS



Mark Harmon On The Enduring Success Of "NCIS"



The Real Reason Why Mark Harmon Leaves NCIS After 18 Years |⭐ OSSA



Mark Harmon Monologue - Saturday Night Live

Thomas Mark Harmon is an American actor, producer, director and former football quarterback. He is best known for playing the lead role of Leroy Jethro Gibbs in NCIS. He also has appeared in a wide variety of roles since the early 1970s. Initially a college football player, his role on St. Elsewhere led to his being named "Sexiest Man Alive" by People in 1986. After spending the majority of the 1990s as a character actor, he played Secret Service special agent Simon Donovan in The West Wing, receiving a 2002 Emmy Award nomination for his acting in a four-episode story arc.
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