The best クリスマス movie ever is A クリスマス Carol! I 愛 any version but my personal お気に入り is the one with George C. Scott. I actually 愛 this story, it's my お気に入り of all-time so any retelling and reimagining is perfect.
Aaah, there is SO many. I suppose my favourite クリスマス movie would be 'The Polar Express' just whole heartedly on the happy memories watching it, cosied up with my mates, eating popcorn.
My favourite クリスマス song (do carols count?) is 'The Twelve Days Of Christmas' I 愛 just belting it out to anyone who's unfortunate enough to be in area. (Usually my フレンズ and family, who have taken to throwing slippers at me when this occasion occurs)