Mark Harmon's Favorite NCIS Episode Became a Modern Classic in Under 5 Years

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Mark Harmon, who led NCIS for nearly two decades before departing in 2021, endorsed a holiday episode as his personal favorite, calling it a modern classic that achieved that status in less than five years. The legendary actor praised the episode to co-writer and actor Diona Reasonover, offering reassurance to fans worried about the show's trajectory after his exit. The endorsement from Harmon, who helped transform NCIS into one of television's longest-running procedurals, carries particular weight given his foundational role in the series.