A large percentage of the pages in my sketchbooks are filled with animation planning thumbnails, most of which I can't post while the projects are in production. Some are tighter than others, while some even I can't figure out a day later. Here's a set from some preproduction animation done early in the development of the Ratatouille video game. You'll notice this rat bears little resemblance to the characters in the movie. That's because when these we're done Pixar was months away from nailing down their character designs, and we were working from very limited reference.