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.
Other mistake: It would appear that (as late as early-Season 5), almost all screen shots of computer forensics include the same hard drive properties screen - it seems to be the same hard drive each time - 111GB, with 93GB used and a 129kb private container on it. I have not noticed whether they are all named drive G:, but several have been. The only thing that changes is the 'header' section, which is manipulated each episode to show something specific (but not real) for the TV audience to read.
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.