I know, you saw the title and thought "Star Wars!" Yes, the infamous Star Wars Holiday Special made the list, but it is far from the only bizarrely bad Christmas specials. Some are intentionally so, which doesn't make them any less weird. Others were an earnest grab for an audience that turned out strange, especially in hindsight. For example, check out Christmas Comes to Pac-Land.
With the success of the video game and animated series Pac-Man came the psychedelic 1982 special, Christmas Comes To Pac-Land. Pac-Man needs to save Christmas after accidentally crashing Santa’s sleigh, and does so by forming a temporary alliance with his famed ghost enemies and feeding power pellets to the reindeer.
Most of the shows on the list have some video evidence, and some are available on the net in their entirety. Link