Along with the late David McCallum, Mark Harmon is arguably the actor who's most commonly associated with the "NCIS" ...

NCIS' Mark Harmon reportedly shares many similarities with his character in the series Leroy Jethro Gibbs, including his biggest hobby.

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I would say that at this point, this pertains more to Gibbs than to me, that I’ve got some very trusty voices in my head right now — one of them being Mark Harmon, who’s been a sage to me ...

How many Broadway shows has Christian Mark Gibbs been in? Christian Mark Gibbs has appeared on Broadway in 1 shows. How many West End shows has Christian Mark Gibbs been in? Christian Mark Gibbs ...