The Nightmare before Christmas (2003)
The Pumpkin King is bored with having only Halloween. He finds himself in another land, and is more than fascinated. He decides that this time his people will have Christmas instead. He let's Sandy Claws kidnap to give him a break and be Sandy instead.
National Lampoon's Christmas Vacation (1989)
A father, a tree, a slide, some special oil and a Christmas gratification.
Already prepared next year's calendar. I changed it a bit by renaming the movies so I don't know what they are anymore and randomly put them into new folders marked 1 to 24. So by next year I won't know which movie will be in.