When Lucille is showing her new robot vacuum, a crew member's hand can be seen above the piano on the far right of the shot just as the vacuum is about to go behind Gob.
(at around 17 mins) GOB is yelling out racial stuff about the Indian kid. He turns toward the bleachers to yell some more and then they cut back to Michael and George-Michael's shot, at that time, you can plainly see the cameraman at which GOB was yelling toward in the bleachers.