Almost none of the movies mentioned were around when I was a kid. We watched A Charlie Brown Christmas, Willie Wonka and Chocolate Factory, Wizard of OZ and all of those stop action Christmas movies like Rudolph and Santa Clause is Coming to Town. Never really watched It's Wonderful Life. My all time favorite though was the Grinch Who Stole Christmas, the animated one of course not the monstrosity that came out later.
I like most of the movies people listed but I never really thought of Die Hard as a Christmas movie. Must be a lot of people who do though because the local movie theater has flash back Thursdays where they show older movies and this week it will be the original Die Hard.