Well...
There are a few things holding this great flash back, such as how the reindeers legs only move one way, they could have knees, but i'm not to picky, it still works.
another thing is that when you get peoples voices (santa's for instance) you should lower the sound in flash, its all nice and quite for the whole movie then it gets real staticy.
You should try a little harder on the walk cycles as well, people bend their knees more when their walking, and dont stay the same.
This movie has many good qualities to, such as the humor. i found it quite funny!
I say overall 6, because you could have tried a little harder,