This was never shown on television in its country of origin: USA. It was broadcast in New Zealand, Canada, Germany, Sweden and Portugal. For all other countries, this unintended series finale can only be seen on DVD.
FOX announced the cancellation in the middle of this episode shoot but allowed them to finish it.
The title is from "'Twas the Night Before Christmas" or "A Visit from St. Nicholas" first published anonymously in the Troy, New York Sentinel on December 23, 1823. It is generally thought to be written by Clement Moore.