Plot hole: During Ryder's report, as Bruce and company watch it on TV, the camera suddenly zooms in on Joker standing on a catwalk above Ryder, and none of the crew, especially not the camera man who caught the villain, makes a comment about this. They may have thought the Joker (or rather an impersonator) was perhaps a surprise gag in the show, but since this is supposed to be a serious documentary report, it is still strange that they wouldn't point it out.
Revealing mistake: As the RCV enters the gravel field with the bomb, you can see a person in shorts walking casually in the background, despite the area being sealed off.
Kessei! CLAMP gakuen tanteidan - S1-E1
Continuity mistake: Nokoru Imonoyama is looking at the dossier about the brother-in-law of their client. The chart showing the sorry state of his business looks different from the close-up when Nokoru puts it down - for instance, it's bi-color grey and white, when it was simply with white background before. (00:13:15)
Academy's Seven Mysteries Murder Case: File 1 - S1-E1
Continuity mistake: Miyuki and the other girls happen by several bloodstains which turn out to be a result of Kindaichi's messy eating habits. When Ruiko Sakuragi makes her appearance, the gory ketchup mess in the corner is gone. (00:05:15)
Continuity mistake: When King mentions the two brothers' "destiny", his big feline is at Young Diabolik's side, facing King and the others. Aerial shot, and the panther is at King's side facing Diabolik. (00:05:00)
Silence of the Lamborghini - S1-E18
Factual error: There is a fashion show in Rome by "Gianni Bellisimo". The correct spelling is Bellissimo.
Visible crew/equipment: As Jefferson and Ryan talk about repenting for all the bad they have done, you can see a boom mic waving around at the top right corner above the scene. (00:35:56)