This was created with Blender, a 3d graphics program.
The movie was created using Blender, to improve Blender.
Blender is open source, and free (as in freedom AND beer) to distribute.
The movie, Sintel, was created using open source software, and most likely use Linux for it’s render servers.
I was blown the fsck away by the clip. The quality of both the story AND the CGI are amazing. If this is what can be done with Blender, Pixar and Disney best watch their backsides, lest they get cooked.
Find out more at www.sintel.org