Visible crew/equipment: When Emily and Bob get into the elevator to go to lunch. The camera pans over to the door to Bob's office. The shadow of the camera is visible on the wall.
Have You Met Miss Dietz? - S2-E6
Visible crew/equipment: The camera is on Carol sitting at her desk talking. Behind her, you see a shadow of someone walking by. (My guess is that it was Jerry Robinson getting into position to enter the scene about 23 seconds later from that same location.) (00:07:45)
Fit, Fat and Forty One - S2-E11
Continuity mistake: In the opening scene when Bob is at the doctor, the doctor is pointing at Bob. The shot changes and his hands are now in his pockets.
Continuity mistake: When Emily and Howard are talking about Howard's ex wife moving in with her boyfriend. Howard's puts his hands on his forehead. The shot changes, his hands are now on his cheek.