I'm not able to keep up with the prize news of the day, but here's a little something to make up for it:
Robot Competitions - ROBOT CONTESTS AND COMPETITIONS FAQ - Robots.net - This currently covers 121 robot competitions. There's a calendar of competition dates - something I'd do with space prizes if I had the time. There are all sorts of robot competitions: underwater robots, micro air vehicle robots, soccer robots, lawnmower robots, solar power robots, basketball robots, battle robots, bartender robots, blimp robots, etc... the beam power Centennial Challenge is represented.