I have start playing with Blender, a free and open source
3D soft. Itīs really good tool for work, with a lot of features (polys, bones, rigging tools, global ilum, compositing, editing, mat trees, soft bodies, fluids, hair, game tools etc,)  see features videos
 
I made a videotutorial using blender about
iluminating with compositing normal_nodes
 
 
More info and free download at
www.blender.org
 
 
Some Blender Art from
Blender Gallery

 

No direct link, Sorry. You need type manualy