Mark Harmon
72 years old
Thomas Mark Harmon (born September 2, 1951) is an American actor, producer and director. He is known for playing the lead role of Leroy Jethro Gibbs on NCIS (2003-2021), a role which has earned him...
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Grey's Anatomy (1975-1994)
What if Grey's Anatomy had been made 30 years earlier
by ABC
A drama centered on the personal and professional lives of five surgical interns and their supervisors.
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