Got much better as it progressed
If the movie ended with the amount of action it started with, I would have given this movie a lower mark -- the graphics were great but I didn't think there was enough animation during the beginning to show off the creativity of the author, as it was mostly the song that was the funny part.
As it progressed, the animation got better and better, till the part with santa on the roof of the building. And because of that, I have to say, great job.