From the channel 9 web site ...
This summer, why not put your coding skills and creativity to good use for a chance to win an Xbox with Xbox Live subscription and Halo 2!* That's right, we're giving away six Xboxes each with an Xbox live kit that includes a one year subscription and a copy of the soon-to-be-released, Halo 2. The Summer of Express contest is a worldwide skill contest where developers are challenged to create "non-business" applications using the newly announced Express products. The Express products are lightweight, easy to use, easy to learn tools for hobbyists, enthusiasts, and students who want to build dynamic Windows applications and Web sites.
Express is all about having fun and we sure hope you do.