Not long after Faith leaves the hospital, we see her walking through the street past some local shops, and as she is walking, the same couple walks past her 3 different times, then, when the camera zooms out, we see the same couple entering a shop on the side of the street they originally came from.
After the cops arrive, Buffy chases Faith and we see Buffy turn a corner and run along the walkway. Cut to a long shot of Faith running and we see Buffy make the same turn only to run across the grass.
As Buffy and Willow walk across campus just prior to encountering Faith, the same student passes by Buffy and Willow twice on Buffy's left side.
When they are at Xander's basement at around 10 minutes, when Xander is going over to sit down in the sofa beside Willow, Willow is clearly putting her feet down on the floor just before Xander is seated, then the camera angle changes and Willow is suddenly sitting with her feet in the sofa again with no time to change position.
When Faith is walking round the hospital, she talks to a woman with a teddy bear who is presumably a visitor. Said visitor is seen entering from the exterior of an exit door that has a push-down bar on the inside, so she shouldn't have been able to open the door from the outside.
The stone wall wobbles when Faith vaults over it after the fight by the notice board.
At Joyce Summers' house, when Buffy and Faith are fighting each other, they both throw themselves down the stairs. While sliding down the stairs, the cameraman and camera are clearly visible on the left side of the screen.
During the scene where the trio split up to try and find Adam, just after we see the corpse's feet behind Buffy, a crew member is blatantly seen holding a boom mic in the background.
During the scene where the trio split up to try and find Adam, just after the corpse's feet are shown behind Buffy, a crew member is blatantly seen holding a boom mic in the background.
Boom and operator visible standing in the wood when Buffy, Xander and Willow find a demon that Adam's dissected.