Looking through my files I stumbled upon this movie of the 3D Zoetrope from Pixar's exhibition at the NYC MoMA earlier this year, and I realized that it probably hasn't been posted anywhere. So here it is! It's a 4.2 MB mp4 movie, and of course it doesn't approximate in the least how cool this contraption looks in person. This is real 3D animation. There's plenty more information on the Zoetrope and the rest of the exhibit (which I believe is in London now) at the Luxo Blog.
You can see more of my personal photos from the exhibit here.