An animatic is an essential part of any animation. Althought it just rough drawings and text, it sets up the the main animation's story, effects, sounds, and organizes thoughts. If something come up that you want to changeduring the animation process, it's much better to do it during the creation of the animatic then the animation, since it takes a much shorter amount of time.
Dreams Of An Eraser Animatic
Warning: Flash Player 9 is required to view this animatic and can be downloaded from www.adobe.com