As much as I hate Jim Carrey for his political views, two of his movies are some of my favorites. "How the Grinch Stole Christmas" showed his talents in improve. And the Disney version of "A Christmas Carol", even though he was just lending his voice, was awesome.
A little known movie that no one considers a Christmas movie is "Funny Farm" starring Chevy Chase. This was Chevy in his younger days when he had a lot of charisma and the movie concluded during Christmas. I like it very much.