Yes. There is an app for that. I actually found an app that increases my battery power. I was getting frustrated with that no settings or apps were fixing the battery consumption. JuiceDefender is the first battery saving app I have tried that lives up to its name.
I played around with a live wallpaper app on the emulator. Pretty soon I will be writing apps from scratch…well, maybe after I finish my master’s thesis and squadron officer school. Maybe.