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When Bob Newhart offers career advice, you listen. During his guest appearance on NCIS, he imparted wisdom to Mark Harmon about the advantages of long-running shows.

In the entertainment industry, few insights are as valuable as those shared by established icons. Such was the case when comedy legend Bob Newhart offered profound career advice to Mark Harmon during his guest role on NCIS in 2011. Newhart, who played Dr. Walter Magnus, underscored the importance of maximizing opportunities in long-running series like NCIS, which has become a television staple.
During a conversation reported on the NCIS: Partners & Probies podcast, executive producer Scott Williams recounted how Newhart approached Harmon during a lunch break. Newhart cautioned him, "Ride this f**ker into the ground," illustrating the rarity of such stable and lucrative roles in television. With a career that includes The Bob Newhart Show and Newhart, Newhart recognized the potential longevity of NCIS, which had already been airing for several years.
Newhart's wisdom stemmed from his own experiences on long-running hits, emphasizing the job security that comes with such roles. "You've struck gold here," he advised, conveying that Harmon would likely look back on this opportunity with nostalgia.
Taking Newhart's words to heart, Mark Harmon continued in his iconic role of Supervisory Special Agent Leroy Jethro Gibbs for a decade following their conversation. Harmon first debuted the character in a backdoor pilot for NCIS that aired as part of JAG in 2003. Despite leaving the series after season 19 in 2021, Harmon remained connected to the NCIS universe, notably appearing in NCIS: Origins as an older version of Gibbs.
In interviews, including a candid discussion on The Kelly Clarkson Show, Harmon shared insights into the demanding nature of the series and how the rigorous hours began to wear on him. Ultimately, he felt the timing was right for his exit, having been satisfied with the storyline that concluded his character's journey.
Scott Williams, who overheard Newhart's dialogue with Harmon, was inspired by the advice. He expressed his determination to adhere to Newhart's wisdom and contribute to NCIS as long as possible, highlighting the ripple effects of mentorship within the industry. Williams remarked, "I am gonna do what Bob said — if they'll have me, I'll ride this f**ker as far as it'll take me." His commitment underscores the supportive dynamics present on set and the importance of learning from industry veterans.
The exchange between Bob Newhart and Mark Harmon serves as a powerful reminder of the significance of understanding and seizing opportunities in the competitive landscape of television. For aspiring actors and professionals, it emphasizes the value of commitment to roles that can define careers. As NCIS continues to captivate audiences, the lessons imparted by both Harmon and Newhart resonate throughout the series, underscoring a legacy built on experience and wisdom.
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