The Star Wars Holiday Special is the stuff legends are made of. Its not so much a movie as it was a 2 hour TV special made one year after the original Star Wars movie, in 1978. George Lucas was not involved with the production, but he sure did cash the check.
It is likely you have never watched this film. And with good reason. George Lucas, and most viewers that watched the TV broadcast, hated the film. Lucas hated it so much that he had it locked away in the Lucas Films archives, never to be seen again. To this day, the film has only aired once on television and it has not been officially released in any way by Lucas Films.