PhotoBooth effects with the Gimp

Lately I tried to recreate the "stretch" effects you can achieve with the Apple PhotoBooth application (see link below).

Using the Gimp, it's actually quite easy to mimic this feature using Filter/Distort/iWarp

Here using Grow :


Here using Shrink :


Here using Move :



see Mac OS X 10.5 Help: About Photo Booth
and some examples of photo booth pictures here