Since there is no clear license I dont upload, but it is a very nice example of minimalistic modelling, texturing and rigging, and some people dont follow mango blog, so here is link to Mango Blockheads.

article with image: http://mango.blender.org/rigging/blockheads/ 

blend: http://mango.blender.org/rigging/blockheads-blend/attachment/blockheads_...