I liked the Disney stuff today, I've loved some of the breakout sessions on the Olympics, SharePoint Portal Server, the future of online Comic Book reading and the never-ending Guitar Hero II Tournament, but this is, by far, was favorite demo yet.  I can see my work productivity taking a dip pretty soon...

Visitmix.com:  Netflix Uses Silverlight for Video on Demand

"In today's keynote, Netflix demonstrated a Silverlight-based video-on-demand player.  The UI for this thing is truly impressive.  Watch here to see how Netflix used Silverlight to provide a cross-platform media player."