Over its 18 seasons, “NCIS” boasted a talented cast, and interestingly, Mark Harmon wasn’t the initial choice for Leroy Jethro Gibbs. Notable family ties existed within the cast, such as Sean Murray being the stepson of the show’s creator. Some cast members, like Pauley Perrette and Michael Weatherly, showcased their musical talents. Mark Harmon’s passion for carpentry aligned with Gibbs’ interests, and the tools on set were his own. Departures from the series included Sasha Alexander and David McCallum, often attributed to the demanding pace of the show.
Cote de Pablo left due to concerns about the scripts, while Pauley Perrette’s departure wasn’t connected to any drama with Mark Harmon. The show featured notable guest appearances by future stars like Millie Bobby Brown and Sean Astin. Despite a rocky start, fans adored the on-screen chemistry between Cote de Pablo and Michael Weatherly. “NCIS” not only presented intriguing mysteries but also showcased the diverse talents and personal lives of its beloved cast.