You Tube actually has some pretty cool animation reference, pencil tests, and the like that I came across earlier this weekend. One of those things that I'm sure many have come across before, but still worth checkin out now. This is part 1 of a video of a lecture he gave at CalArts. He's just making quick sketches, but it amazed me how much of animation is just second nature to him now. I specificially noticed how he easily kept track of the force and changing shape of the arm, elbow and back, as well as general physicality, and at the same time adding bits of the subjective character and entertainment on the fly. Pretty cool!