Visible crew/equipment: When everyone's back at the flat, as Del Boy is looking straight down the hallway to his and Rodney's bedroom, someone comes up to him and he turns around. When it goes from his close-up to the wide shot of everyone else the shadow of the camera reversing backwards is visible for a few seconds.
Modern Men - S8-E2
Visible crew/equipment: When Trigger tells everyone about his accident with a "mind your head" sign, as Boycie pays Rodney to get the drinks, a boom mic is visible at the top of the screen.
Visible crew/equipment: When Del and Rodney are sitting in the van after the auction you can't see into the back of the van for huge boxes. When they start shouting and screaming the camera angle changes to show the van rocking from a distance, and you can see someone in the back of the van through the back windows banging against the side of it.
Visible crew/equipment: Just after the video recorder blows up, you can see the shadow of one of the cameras on the video recorder. It slowly moves out of the camera's view.
Visible crew/equipment: When Del is trying to sell the toy dogs, in a number of shots from behind the customers, the reflection of a boom mic is visible. Look to the right of the double doors behind Del. (00:01:15)
The Second Time Around - S1-E4
Visible crew/equipment: After Del talks about Pauline's second husband kicking the bucket, a boom mic can be seen at the top of the screen. (00:06:00)
Visible crew/equipment: When Del tells Rodney he should tell the women what he sold that day, a boom mic is visible at the top of the screen. (00:29:05)
The Russians Are Coming - S1-E6
Visible crew/equipment: Just before Rodney calls Del a ruthless mercenary, a boom mic shadow can be seen on the far left of the screen. (00:13:40)
The Russians Are Coming - S1-E6
Visible crew/equipment: When Del says about Kenneth Moore in the shelter, a huge boom mic shadow can be seen moving on the wall behind him. (00:15:15)
The Russians Are Coming - S1-E6
Visible crew/equipment: In the shelter when Del says, 'Think what i could do with £1000' the shadow of a boom mic can be seen in the top right corner of the screen. (00:13:05)
A Slow Bus to Chingford - S1-E5
Visible crew/equipment: When Del asks Rodney if he is still looking for a job, in the next shot the shadow of a boom mic can be seen on the bottom left corner of the sofa. (00:04:10)
The Russians Are Coming - S1-E6
Visible crew/equipment: When Del says they should drop a bomb on all Russian cities, a boom mic shadow can be seen in the top right corner of the screen. (00:13:35)
He Ain't Heavy, He's My Uncle - S7-E6
Visible crew/equipment: When Del is looking out the window at the end, you can see a camera reflected in the glass.
Visible crew/equipment: When Del and Rodney's dad announces that he's leaving, a boom mic moves across the top of the screen.
The Russians Are Coming - S1-E6
Visible crew/equipment: When Grandad complains his TV doesn't have a picture, a boom mic can be seen in the top left of the screen. (00:12:10)
The Russians Are Coming - S1-E6
Visible crew/equipment: When Grandad shouts at Del in the bunker about war, a boom mic shadow can be seen moving on the pillow behind him. (00:15:30)
Visible crew/equipment: Wires are visible on the butterfly that Del and Rodney try to catch.
Visible crew/equipment: In the very first scene, as Rodney is reading the book, a crew members' finger can be seen brushing past the screen in the bottom left of the picture. (00:01:00)
Visible crew/equipment: Just after Rodney psychs himself up in the club, the reflection of a boom mic can be seen moving in the picture on the wall behind them. (00:24:40)
Video Nasty - S5-E5
Visible crew/equipment: After Rodney complains that the "t" and "a" are missing from his typewriter, Del says "I have faith in you". As he says this, a boom mic sweeps past the top of his head.
Chosen answer: An apparent long string of illnesses.