Continuity mistake: In one scene, Tony observes that Ziva never uses contractions when she talks, and Ziva even seems confused as to what they are. But in previous episodes, Ziva not only knows what contractions are, but uses them frequently.
In the Zone - S5-E15
Continuity mistake: When DiNozzo wonders why Jardine came on the mission to Iraq, Jardine's hands move from gripping her pack straps to hanging down at her sides. (00:16:00)
Continuity mistake: "Patriot Down": The beach scene in the opening sequence is repeated at the end, but the dialogue differs the second time. Gibbs is kneeling on the sand when someone puts a gun to his head and says, "Welcome to Mexico." When Gibbs reaches for his weapon, the voice growls, "Don't even think about it." These two lines are delivered in reverse order when the scene replays at the end.
Continuity mistake: When Abby is first discussing the victim's blood types, there is a shot from behind her that shows a black band wrapped around her upper left thigh about an inch below the hem of her skirt. The shot changes to a front view and the black band is gone.
Once a Hero - S4-E8
Revealing mistake: When Ducky and Gibbs are in the morgue examining the body of the girl found in the hotel, the camera cuts for a few seconds to the girl lying on the slab. During that shot, you can see her neck moving to her pulse (just after Ducky says, "There's some bruising on the sternum"). (00:19:10)
Continuity mistake: When Abby is talking to Gibbs about getting a tattoo, he goes from looking at her computer screen to her in between shots. There's a straight cut, so there was no time for him to turn his head. (00:06:55)
See No Evil - S2-E1
Continuity mistake: In the scene where Gibbs' phone breaks, and he tells McGee to "reboot" it, Tony is in the back, getting a phone out of the cabinet. He starts to give the phone to McGee. The next shot, the cabinet opens again, and Tony pulls out the phone again and gives it to McGee. (00:04:55)
Agent Afloat - S6-E2
Continuity mistake: Near the end, several of the items on Ziva's desk change orientation from one shot to the next.
Continuity mistake: In the scene where Chip first brings the evidence to Abby (after getting it from Mr. Palmer), in one shot, her spiderweb tattoo is on the right side of her neck, and Chip is standing to her right. In the next shot, her tattoo is on the left side of her neck, as it normally is, and Chip is standing to her left. (00:08:20)
Murder 2.0 - S6-E6
Continuity mistake: When NCIS catches the killer, the way he holds a dead man's switch changes. In some shots, he holds it with all five fingers, and in others he holds it with his middle two fingers and thumb, with his index and pinkie fingers extended. (00:39:45)
Continuity mistake: When DiNozzo is talking about the pictures on the film, he has the film in his hand. But as McGee speaks, Tony has his hand held out and open. (00:02:50)
Continuity mistake: At the start, DiNozzo is holding up his 1974 camera. When the shot changes, the way it's held changes. Take note of his finger in relation to the lens of the camera. (00:02:30)
Lost at Sea - S10-E4
Continuity mistake: When Borin and Dinozzo are talking about why she accepted the date, Borin's hair is constantly switching/moving place. This is not because of the wind. (00:27:00)
Lost at Sea - S10-E4
Continuity mistake: When DiNozzo says about the bet being off, his facial expression changes completely in an instant cut. He goes from concentrating and serious to joking and laughing. (00:27:30)
Lost at Sea - S10-E4
Continuity mistake: The way Gibbs holds the key card that Ducky gives him changes between shots. Watch the sides of the card. (00:09:30)
Continuity mistake: When we see Ducky arriving back at the naval yard, two men walk past his cab but when the shot changes, they walk past again. (00:24:20)
Continuity mistake: When Ziva is on Tony's shoulders, she goes from grimacing and looking at the floor to looking above her and not grimacing as much instantly. (00:04:00)
Till Death Do Us Part - S9-E24
Continuity mistake: The way Ducky passes Jimmy the organs from the cadaver, the way he holds them changes between shots. (00:06:10)
Continuity mistake: When Gibbs is talking to the chaplain about keeping daughters safe, the way he holds his coffee changes between shots. Note his grip on the cup. (00:23:00)