Visible crew/equipment: Look closely when Clair gets up after saying to the kids "I'm glad we had this chat", you can see a tip of a camera on the right.
Visible crew/equipment: A boom mic is visible as Cliff gets off the couch and says "I know one thing, they are not going to live here."
Pam Applies to College - S8-E4
Visible crew/equipment: If you look carefully, at the very top of the screen, during the scene where Olivia is telling the Huxtables that she didn't get to do her show-and-tell at school, you can see the microphone appear very briefly.
Chosen answer: That is the song "Open the Door Richard."