I said I would go back to the bouncing ball (And I will continue to do so throughout my career) because it is the most basic and also the most important technique an animator can know. It teaches weight, timing and material based physics. I wasn't happy with my previous attempts and at the moment I am forced to use make puppets out of my characters with Flash...so this took me about 5 minutes, but it was relief that I cannot explain. It felt good making every single frame. Planning the timing of the bounce, knowing where each frame needed to go to make a nice smooth bounce through the screen. T&P is my relief at the moment - Flipbook is definitely the tool for me.