So here's our list:
Miracle on 34th Street
It's a Wonderful Life
National Lampoon's Christmas Vacation
About a Boy*
A Charlie Brown Christmas
Rudolph the Red-Nosed Reindeer
How the Grinch Stole Christmas
Santa Claus Conquers the Martians (MST3K version)
Santa Claus (MST3K version)
*Not technically a Christmas movie, but it's become a tradition to watch it every year anyway.
And I hope I can track down A Very Brady Christmas on TV this year. Last year I couldn't find it, but it eventually showed up Christmas morning and I caught the last half hour. So gloriously cheesy.
And dammit, Eight is Enough's "Yes Nicholas, There is a Santa Claus" still gets me. I hope it's still up on AOL video. I've got it bookmarked somewhere....