The Long Legs of the Law - S2-E1
Revealing mistake: At the very beginning of the episode, Leonard Pearce is waiting for the cue for his character to start looking for his teeth. He's standing in the living room, between his room and Del and Rodney's room. (00:00:25)
The Long Legs of the Law - S2-E1
Visible crew/equipment: When Rodney realises that he has just drank Grandad's Steradent, he runs into the bathroom. As Del is laughing at him, just above and to the right of Del's head, a boom mic is visible. (00:05:55)
The Long Legs of the Law - S2-E1
Revealing mistake: When Del drops all the cutlery, if you watch you can see David Jason is holding it in his hands ready to drop. (00:07:50)
The Long Legs of the Law - S2-E1
Visible crew/equipment: When Rodney walks over to Grandad and Del, just after Grandad says "they are never off duty", a boom mic pops into view for a second and then moves back up again.