Man... I don't know where to begin!
From the 3D renderings and animations to lots of photo repair/retouching to video editing to DSP/audio editing to DVD mastering to drawing illustrations to writing a short book to writing web pages to writing web programs to writing stand-alone programs...
It's hard to identify a "most creative" thing.
edit: actually, I think
this is an AppleNova favorite, something I tossed together in a couple of hours, inspired by an
actual post by pscates2.0.