Continuity mistake: When the Buffybot is at the parent teacher day and she is looking at the student model of a Utopian city, the hover cars are moving around the model on a wire. But when the shot changes, the cars aren't moving. Then in the next shot, they're moving again.
Continuity mistake: In Bargaining, part 1, Anya is talking to Giles while he trains the Buffybot. There's a shot from behind and we can the corner of her jumper move around as she turns away, then it cuts back to a front view of her and she's still facing Giles. (00:26:20)
Visible crew/equipment: When the camera pans to Willow on top of the crypt, on the right side of the screen you can see part of the camera.
Continuity mistake: After the 'hell hogs' interrupt the ritual, Xander pulls Willow out of the way. He then tells Anya and Tara to "take off." which they appear to do, starting to run Into The Woods. But then in the next shot, they are back standing still in the clearing (on the left of the shot).
Visible crew/equipment: After Giles' heavy machinery joke, the shadow of a boom mic is visible on a gravestone behind Tara on the far left of the screen.
Visible crew/equipment: At the beginning of the episode after the Buffybot kills the remaining vampires and the rest of the gang is grouped together, the shadow of a boom mic can be seen below a tall gravestone behind Giles, far right of the screen.
Chosen answer: He had larangitis and because of the shooting specifications they had to have him shoot the scene with a bad throat, they then re-recorded his lines and dubbed them. At various points during the scene and indeed the episode you can see him touch his throat or rub it.