CrazyCam: Create Funny Videos With iPhone

Who has not done so themselves, or seen it? You breathe in helium and even your own voice sounds very high and as a comic. This is now with the app CrazyCam for iPhone, iPod Touch and iPad 2.
The app is made real genius to transform a normal video recording a totally funny movie. But how does it work?
Very simple. You start the app and select the camera, because with this app is the front camera