Air Painter: Augmented reality for the android Graffiti taggers!

It's similar to geoPaste, an Android application that lets you draw on real-life. Air Painter is a Japanese Android application with a similar premise, though its user interface seems a bit more refined, as can be seen in the video below (don’t worry about the German, you don’t have to understand it to see how cool this application is). More information on AirPainter’s hompeage, and here’s another video.