There have been some great endings to some classic TV shows, like "M*A*S*H" and "The Mary Tyler Moore Show." And there have been some that never had a finale, like "Married With Children."
But for my money, the best ever was the surprise finish to "Newhart," with its clever ending that brought back the original series and that the whole second series was a dream by Bob Hartley.
Here is number 15 in our series of YouTube clips. Enjoy.