I just finished an android app that basically enables the Android device to wirelessly control a DSLR. It uses a bluetooth equipped Arduino connected to the camera. The Android app then just communicates with the arduino over bluetooth and provides wireless control over most of the DLSR's features. Can be pretty useful in movie production setups where DSLRs are mounted on cranes etc. This project is Open Source and I need some beta testers who have some experience with arduino to test this. Feel free to join in, and please DO report issues!