Actor | Producer | Director
Gary Cooper is his acting idol, due to the respect Mark has for Cooper's acting philosophy.
I don't care who's No. 1 on the call sheet or how big my trailer is. I care about the work. I don't care who gets the laughs. I just care that the laugh comes.
Plays Special Agent Jethro Gibbs on NCIS and other shows set within the franshise
Thomas Mark Harmon
Burbank, California, USA
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