The first year animators are planning some character animation and experimenting using traditional techniques. Once they start flipping out, it's hard to stop them.
Above is a video clip of Argentinian animator Ignacio Ochoa animating (in colour erasable pencil, like Will. I would like everyone animating with 6B lead pencils. [link] If it's good enough for Glen Keane, it's good enough for first year animators).
This is a link to Mike Nguyen's blog, he taught animation at CalArts and animated on Brad Bird's Iron Giant feature film. In his case he is 'rolling'. Thanks Michelle for pointing out this post.