Shock horror, but I am not a huge fan of Christmas movies!
Die Hard (and 2) are fab as are Home Alone (and 2) but I would happily watch them at any time of year because I enjoy the action and comedy genres, not due to them featuring Christmas.
Muppet Christmas Carol is brilliant and I suppose is the only Christmas film I would actually watch at Christmas. But the one year we did watch it at Christmas, we didn’t enjoy it because we were too busy with our own Christmas to focus on the plot/songs etc.
It’s a Wonderful Life is just too sad.
Scrooge and Scrooged don’t count (in my opinion) because they are based on literature and I know the book of A Christmas Carol very well having read it over 20 times.
Elf, Santa Claus, The Grinch, Miracle on 34th Street: all of these I’ve never actually seen as they just don’t appeal in the slightest.