Jonathan Grynspan is a lean, mean, Cocoaing machine! He's been working with Mac OS X for the past three or so years, and he decided that this duel would be the perfect chance to show off his astounding coding skeelz.

The charity he's chosen is Child's Play. They donate toys and games to children's hospitals in several countries. They're pure yay!

As for the app he'll be working on, it'll knock your socks off blocks of rocks!