As 3D printing or Rapid Prototyping technologies progress and become cheaper they seem to be being adapted and used in ways in which they were never initially intended. Animation is one such industry that has adapted this technology. It was first truly exploited during the making of Coraline. Check out these two videos.
It was also recently used extensively during the making of the title sequence for Dutch TV program 'Het Klokhuis'. Take a look at the video and find out more about the project over at Creative Review.