There will be a new contest to build a ‘Rube Goldberg’ style machine.
It is not limited to realtime simulations (gameblender+bullet, OgreBullet, C4Bullet, IrlightB ullet) but you can also do Bullet baking into animation IPO’s in Blender and make some rendering.
Contest ends 1 March 2007. Prizes include a Playstation 3 (60Gb) and Nintendo Wii.
http://blenderartists.org/forum/showthread.php?t=86512
Erwin