'ParaNorman' expressions - How do they do it?

"ParaNorman" will be opening in two days this Friday on August 17. As you watch the movie and marvel at the facial expressions of the characters, consider the awesome amount of work involved in the stop motion animation process. Watch this video to see how the artists utilize the latest in 3D print technology among other things to achieve their incredible results. Trailers and teasers for ParaNorman have been featured throughout its run up at this Forum topic.