Big Buck Bunny
The Blender Foundation just released "Big Buck Bunny", a CG movie created with the open source software Blender.
Here you can watch the 10-minutes plot on Vimeo, but I suggest you to go directly to Vimeo where you can watch it in Hi-RES! The video is also downlodable from the Big Buck Bunny website.
Big Buck Bunny from Blender Foundation on Vimeo.