Big Silverlight demo
Beijing 2008 Olympics on NBC – goes live in 150 days
2200 hours of 34 sports live and on-demand afterwards.
Lots of supporting surrounding and in-frame contextual information and commentary.
User-driven rewind of live play!
Olympic event notifications and sharing.
Picture-in-picture from 4 streams for an event.
Done with Silverlight 1.0 apparently.