History YMMV / NCIS

** [[spoiler: Ducky's heart attack (which he thankfully survived) in the Season 9 finale and [[https://youtu.be/w9cczjSV_yA?si=c7K-VQOiHZRPEOZC his final scene with Gibbs in Season 19]] is even more sadder with the death of his portrayer Creator/DavidMcCallum in September 2023. Rest in peace, David.]]

** Creator/ZacEfron is one of the boys who the team found with the {{Victim Of The Week}}'s phone in "Deception" [[note]]The episode actually premiered three days before ''Film/HighSchoolMusical'' was released[[/note]].

** Rachel Barnes [[spoiler: the sociopathic little girl who killed her mother]], from "Parental Guidance Suggested" is [[Series/StrangerThings Eleven]].
** Travis, the kid Ziva interrogates about finding a gun in "Hide and Seek" is Manny from Series/ModernFamily
** CameronMonaghan as Nick Peyton, the teenager Vance suspects of killing his parent, in "Out of the Frying Pan"; four years later [[Series/{{Gotham}} he did it for real]].

* AdvertisedExtra: Creator/JonCryer was the main draw in the advertisements of the Season 13 premiere, making it seem like he was going to be at least a recurring supporting character. He ended up only being in 3 episodes total.

** [[spoiler: Ducky’s heart attack (which he thankfully survived) in the Season 9 finale is even more sadder with the death of his portrayer Creator/DavidMcCallum in September 2023.]]

** [[spoiler: Ducky’s heart attack in the Season 9 finale is even more sadder with the death of his portrayer Creator/DavidMcCallum in September 2023.]]

* HoYay: Has it's own page {{HoYay/NCIS}}.

* EvilIsSexy: Agent "Pouty Lips" [[spoiler:Lee]].

* TheyChangedItNowItSucks: To say the least, once Ziva left in the Season 10 finale, the series has gradually shifted out several of the old crew over the next decade-plus, culminating in 2022 having [=McGee=], Palmer and Vance as the last mainstays around, with Ducky in a background historian position.[[note]]And with Creator/DavidMcCallum's Death, that just leaves 3 left.[[/note]] Combine this with even newcomers over the years like Bishop and Sloane taking their leave, and Creator/MarkHarmon being ambiguous about whether Gibbs would return [[spoiler:post-suspension and seeming retirement to Alaska]], and almost the rest of the new cast hitting very different ideas of characterization, and many fans consider ''NCIS'' in a rough patch of not appealing to most older fans while uncertain as to who it's trying to draw in from modern audiences now.

* TheyChangedItNowItSucks: To say the least, once Ziva left in the Season 10 finale, the series has gradually shifted out several of the old crew over the next decade-plus, culminating in 2022 having [=McGee=], Palmer and Vance as the last mainstays around, with Ducky in a background historian position.[[note]]And with Creator/DavidMcCallum's Death, that just leaves 2 left.[[/note]] Combine this with even newcomers over the years like Bishop and Sloane taking their leave, and Creator/MarkHarmon being ambiguous about whether Gibbs would return [[spoiler:post-suspension and seeming retirement to Alaska]], and almost the rest of the new cast hitting very different ideas of characterization, and many fans consider ''NCIS'' in a rough patch of not appealing to most older fans while uncertain as to who it's trying to draw in from modern audiences now.

* TheyChangedItNowItSucks: To say the least, once Ziva left in the Season 10 finale, the series has gradually shifted out several of the old crew over the next decade-plus, culminating in 2022 having [=McGee=], Palmer and Vance as the last mainstays around, with Ducky in a background historian position. Combine this with even newcomers over the years like Bishop and Sloane taking their leave, and Creator/MarkHarmon being ambiguous about whether Gibbs would return [[spoiler:post-suspension and seeming retirement to Alaska]], and almost the rest of the new cast hitting very different ideas of characterization, and many fans consider ''NCIS'' in a rough patch of not appealing to most older fans while uncertain as to who it's trying to draw in from modern audiences now.

** The show started using some extremely cheap looking [=CGI=] in lieu of practical effects in later seasons. [[https://www.youtube.com/watch?v=Wtfo43yV8rA Watch the car's sinking in this scene.]]

** The infamous [[https://youtu.be/u8qgehH3kEQ?feature=shared two idiots one keyboard]] scene, which is frequently mocked for being a particularly extreme example of HollywoodHacking.

** Season 5's "Dog Tags" has a dog at a crime scene that had seemingly fatally mauled a suspect and then attacked [=McGee=] quite violently, forcing him to take a point-blank shot to wound and disable it. Abby proceeds to uncharacteristically shame, demean and utterly give him hell for the rest of the episode as she goes out of her way and puts her career on the line to prove the dog's innocence, despite [=McGee=] being completely justified in self-defense ''because it nearly tore his throat out''. And yes, Abby proclaims it not capable of hurting anyone to [=McGee=]'s face with his wounds, blood and bandages and all, in plain sight. The episode then takes Abby's side at every possible juncture while ''threatening and bullying [=McGee=] the whole way'', including forcing the dog into his care without a choice in the matter and an ImpliedDeathThreat, as well as hindering the current crime investigation massively by focusing on protecting and proving the dog to be innocent, making Abby have a '''massive''' hand on the JerkassBall and expecting viewers to take her side because HeroesLoveDogs despite her poor work behavior over the matter.

** Season 5's "Dog Tags" has a dog at a crime scene that had seemingly fatally mauled a suspect and then attacked [=McGee=] quite violently, forcing him to take a point-blank shot to wound and disable it. Abby proceeds to uncharacteristically shame, demean and utterly give him hell for the rest of the episode as she goes out of her way and puts her career on the line to prove the dog's innocence, despite [=McGee=] being completely justified in self-defense ''because it nearly tore his throat out''. And yes, Abby proclaims it not capable of hurting anyone to [=McGee=]'s face with his wounds, blood and bandages and all, in plain sight. The episode then takes Abby's side at every possible juncture while ''threatening and bullying [=McGee=] the whole way'', including forcing the dog into his care without a choice in the matter, making Abby have a '''massive''' hand on the JerkassBall and expecting viewers to take her side because HeroesLoveDogs.

* AssPull: Harper Dearing's arc consists of one man who is supposedly HopelessWithTech, managing to hack NCIS and government information all over the place as well as somehow finding out about [[spoiler:Gibbs murdering Pedro Hernandez]]. While he does hire outside work to do his initial bombings for him, the rest are entirely his doing and there's never any context or explanation given for how or who he was getting that information from. Every single time our heroes seem to have something on him, he eludes them and kills more people, blackmails others while making it clear he could kill the main cast whenever he wants to, and can wrap everyone around his fingers without them realizing it until it's too late; the only reason Gibbs was able to kill him was because [[ILetYouWin Dearing all but let it happen.]] The story also repeatedly emphasizes that Dearing is a ''normal'' citizen, former company CEO or not, raising a lot of questions as to how he managed to pull off all of his elaborate plans, and infamously causing some audiences to feel like he was just too [[WillingSuspensionOfDisbelief implausible an antagonist]] the way he was presented.