Some good thoughts there. I never had the Uncanny Valley term unpacked for me so that was good to know.
It made me think of how this choice impacts Wii games. Stylized games like Zack & Wiki, Okami and Mario Galaxy work really well on the system.
I remember that Valve actually toned down the detail of their character models in Half-Life 2 because people were disturbed by them. They were hauntingly real, like human beings without the spark of life in their eyes.
I know animation plays a huge role in it as well. Some Disney CGI films have really clunky animation like their first CGI Christmas special. Those have no soul.
This reminds me of all the work put into Jurassic Park. They did an amazing job creating dinosaurs that looked like they were alive. What a break through film.