Continuity mistake: At the end of the episode, Theo and Cliff are drinking a soda. Cliff pours half of his in a glass and begins drinking it. When the camera pans for the end of the episode, the bottle that cliff set down is once again full.
The Cosby Show (1984)
1 mistake in Monster Man Huxtable - chronological order
Theo: You two are the most obnoxious people that I ever met.
Rudy: Thank you, your grumpiness.
Trivia: Nearly every sweater Bill Cosby wore on this show was sent to him by a fan.
Autumn Gifts - S4-E7
Question: When Cliff is watching TV, the sound of voices singing "Open the door and let me in." come from the television. What song is this?
Chosen answer: That is the song "Open the Door Richard."