For everyone (like me) who has trouble seeing the "holiday classics" because you never know when they're going to be on... or if you don't have television reception... here are two of my all time favorites, on YouTube:
How the Grinch Stole Christmas
Quality not as good as TV or DVD, but then again you can watch it when you want, and without shelling out $20 for the DVD!
Fortunately, for that we have grandma.
Actually I'm not sure she bought those two (I probably did), but for a while she was making sure Jr. had every major Disney video.