Visible crew/equipment: In the scene in Y2K when you see Donny Jones jumping around in front of the TV screens, as the camera slowly moves in past the TVs, you can see the camera man and the camera actually shown on the TV.
Visible crew/equipment: When Darnell is amused by the funny greeting card, as the camera moves towards him, you can spot a crew member (most likely a boom mic operator) on the left side of the screen, on the other side of the display shelf. His/her arm is well visible but you can even see his/her head for a brief moment.
Witch Lady - S4-E21
Visible crew/equipment: Throughout the whole episode, there are times that you see the green light from the camera reflecting off of the Witch Lady's glasses.
Answer: Sounds like s04e11, "Nature's Game Show."
Bishop73