Here's a pretty impressive live wallpaper: JiggBot Live, created by Developer Scipher Technologies. I'm not sure how much battery life it will eat, but if you are a fan of live wallpapers this one is definitely worth checking out. It has a free version and a paid version for only $.99 Cents. It seems to run pretty stable from what I can tell so far. You can get it on the Market of download it from AppBrain. Check out the vidoe above to see if it something you would like to try out, then sound off in the forums with your thoughts!