I have a special fondness for The Homecoming, which is the movie upon which "The Waltons" was based. The movie had different actors playing Olivia and John - Patricia Neal (LOVE her) and ... some guy. Everyone else was the same as in the TV show, I think.
I wonder if they'll show it this year, since it's about the Great Depression, and how this huge family is trying to scrape out an existence in the mountains of West Virginia, and how their Dad makes a long trip into the nearest big town to buy Christmas presents for the family and doesn't return. As the panic starts to set in, it's interesting to see how each of the family members copes with the thought that he may not come back.
On a lighter note, I also love Scrooged, A Christmas Story (you'll shoot your eye out, kid!), and Christmas Vacation.
And I cry every damn time the Grinch's heart grows three sizes that day.