Other mistake: Season 5, Episode 12, "Stakeout": The picture on McGee's camera phone is just wrong. It shows not just the man in front of him, but it also shows a hand, holding a camera phone - McGee's camera phone. In other words, the phone is showing a picture of itself and the man, instead of just the man.
Continuity mistake: When Gibbs is trying to talk Lt. Arnett out of jumping off the ledge, Gibbs is relatively close to Arnett in the middle of the wall when Ducky and Abby watch the live news report, but in real time, Gibbs is over at the far left corner of the wall.
Continuity mistake: The pill bottle the agents recovered from the house has the Doctor's name "Fleming" to search for. But when McGee searches the NCIS system, he spells the name "Flemming" and gets his results. As well, the scrip sheets for Dr. Flemming archived on the computer, contain several identification numbers - DEA (AJ0000000000), Batch (00000001) & License (C00000.) - not real numbers - so the prop master didn't even try to fake any of them.
Revealing mistake: Part 1 - As Tony eats his donut, and spills the jelly on his shirt, it's clear that (the actor) is moving his body to make that 'accident' happen as scripted. As the jelly begins to leak out, he doesn't move; because it doesn't fall as expected, he jerks suddenly, to make the jelly fall on his shirt. He stops moving, 'shocked' at this, holding the donut with both hands.Part 2 - The camera angle changes to 'behind' him, and he is only holding the donut with one hand.Part 3 - He then grabs at a napkin (just out of frame) to clean it off; the camera cuts to Ziva briefly, then back to Tony, who does not have any napkin. (TIME: Approx. 24:55-25:05.)
Visible crew/equipment: As Gibbs, Ziva & Tony enter the Nelson home with guns drawn; just after Ziva enters, a man can be seen reflected in the door's window (Gibbs & Tony are in frame, and there is no other character there). Tony enters, then Gibbs - and we see the cameraman reflected also.TIME: 19:45.
Other mistake: When McGee tells Gibbs that Nelson erased his entire hard drive, the camera shows the diagnostic he is running - "Primary Drive Erased: 100%". Yet the details below show 93GB used of 111GB total, and the drive letter is G: (not C: as it would most likely be.) It could be argued that his C: drive is simply an OS drive, and G: is his data drive, but still, 93GB used is not 'erased'.TIME: 22:05.