Here at the BH household, we always end up watching:
It's a Wonderful Life
Miracle on 34th Street (1947)
Christmas Story
The Bishop's Wife
Christmas in Connecticut
Charlie Brown Christmas
We also listen to the radio adaptation of A Christmas Carol- the one that runs about ~3 hours. It's much better than any movie, in my opinion.
I'm sure I'm missing a few. I have no desire to watch any of the newer ones, really. They just don't do anything for me.