Emil Ernerfeldt is studying at Umeå University in Sweden. For his masters' thesis project, he's developed a 2D physics engine, Phun, that's part toy, part educational medium. He describes it thusly:
"Phun is an educational, entertaining and somewhat addictive piece of software for designing and exploring 2D multi-physics simulations in a cartoony fashion. It is part of our long term mission to bring visual physics based simulation to the masses. The application is developed for Umevatoriet, Umeås new science center, where it will run on a large interactive display, but you can also download it and run it on your own pc."
Which you should do by clicking here.
Naturally the first thing I tried to do with it was the big bouncy ball animation that proves so enduringly popular. I think you'll agree I put the Bravia ad, and the Crytek 2 engine, to shame.