Christmas Special 1974 (a.k.a. A Perfect Christmas) - S8-E7
Visible crew/equipment: Christmas Special 1974: When Harold is playing with the toy bus you can see the camera reflected in its windows.
Visible crew/equipment: 2/3rds into the show, in Binghamton's office, Ensign Parker is making believe he is a Royal Navy Admiral and McHale introduces himself. The camera zooms in and the shadow of the equipment goes across Binghamton. He even looks at it but goes on with the scene.