In conjunction with the forthcoming re-release of Star Wars Episode 1 - The Phantom Menace in 3D, Lucasfilm has recently launch a mobile app called "Darth Maul Me", in both iPhone and Android. As the name implied, the main purpose of this app is to transform your face (or your friend's face) into Darth Maul (the main villain in The Phantom Menace), within a few simple steps.
The best part is that you can post the transformed photo into facebook and share it across immediately. I've personally downloaded the app (using iPhone) and tried the transformation myself, the User Interface and special effect of the app is great and it's easy to use. The app is FREE, follow the link below to download the app:
For iPhone: Darth Maul Me
For Android: Darth Maul Me