Why do those stills look so much like a video game to me? Geez, 10 years ago, there was a huge difference between movie and video game graphic technology. That gap's getting mighty thin these days...
Heh - just remember, images always look worse when you know they're computer-generated, no matter how well-done they are. I know quite a few people who can pick apart genuine, unaltered photographs for being blatantly unrealistic and full of "graphical errors" if they're misinformed ahead of time that it's a computer-generated image.