Has it already been ten years?!
University of Colorado, were commissioned to make an animated short
that would be used as a video Christmas card to be sent to various
Hollywood types. Parker and Stone used contruction paper and
stop-motion animation techniques to create the now-legendary The Spirit of Christmas [6.8MB, QuickTime – lots of swearing, and offence-a-licious] featuring the kids who’d eventually get their own show, South Park, Jesus and Santa fighting over Christmas and Brian Boitano, who saves the day.