I know it is not a Holiday movie, but always on Christmas Eve, since I was 10, I've watched The Wiz. The beginging has a Thanksgiving/Christmas dinner theme to it that kind of welcomes the holidays, and then the rest is silly and fun. I haven't really payed attention to it in the past 3 years, but I've had it on in the background while I've been doing numerous other tasks. (So I can sing along.)
I'm as jumpy as a virgin at a prison rodeo!