Recently you may have seen a number of pics from "Pixeloo" who renders real-life versions of famous characters. There's been Super Mario, Homer Simpson, Jessica Rabbit and Stewie Griffin and all 4 of those have been quite cartoony even though they look freaky with their human skin etc.
Brazillian 3-D artist Raoni Nery has now created an un-tooned version of Toy Story's Buzz Lightyear based on Starcraft's Mariner models and it rocks, as you can see at the top of this post.
I love these pics and Buzz is pretty frickin awesome for a bit of fan art too. Cudos for the sterling effort!