Not My Cup of Tea
Don Knotts has always said that he would never dress like his character, Mr. Furley, does in that crazy clothing style. However whenever he shows up to discuss joining the cast, he is also seen wearing an outfit just like Ralph Furley would wear.
Silverman
After it becomes public that Fred Silverman (programming chief) left NBC, you can see the new president’s name displayed on the door. Then in the very next shot, you can see that Fred Silverman’s name tag has just reappeared on the door.