Google did something pretty brilliant last month, and created a visual programing environment for Android devices. Google App Inventor is a combination web application for app layout, and java application for building programming logic with java blocks. If you are familiar with etoys at all, it is very similar.

For those that are already developers, this approach to developing is going to be tedious. We are not the target audience. This is really designed to open up the world of mobile development to a much wider set of people, especially as an introductory computer science course.