Celebrity Cameos?
Not just who voiced who but actors doing the CHARACTERS of themselves.
Joan Rivers was cameo'd during the repair shop song as the "can opener, a lamp, and a shaver" doing some stand up comedy.
That cartoon igor was the ceiling lamp in the repair shop, I do not remember where he is from though but he had the very distinct face from other cartoons.
HAL from 2001: A Space Odessey is the home computer in the master's house. They tried to get the calm voice down.
Anything else I missed? Could someone fill me in on Igor? :D Thanks
I also think the character in the old black and white tv is someone but I'm not sure...