Before taking on the role of Leroy Jethro Gibbs on NCIS, Mark Harmon starred in Worth Winning, a comedy that has not stood ...

Mark Harmon did not grow up in a show business family, but instead, played football through college, and that athletic ...

Long before his days on NCIS, Mark Harmon embarked on a feature film career with the 1987 comedy Summer School, which was a modest box-office success. However, the commercial and critical failure ...

Though his career has spanned six decades and numerous film and TV roles, Mark Harmon is undeniably most famous for his role as Leroy Jethro Gibbs on "NCIS." The popular crime procedural series ...

The 'Harry Potter' HBO cast added key roles for Hogwarts staff, leading to comparisons between the new actors and the film legends ... Before Mark Harmon starred in 'NCIS,' he guest-starred ...