Another very polished Silverlight application was launched recently.  It aggregates new feeds and music videos in a very slick user experience.  For instance, if you click the login button, the background is dimmed and the media is paused as the login UI animates to the forground.  This is a great example of the type of media enriched web applications we had in mind when we created the platform.  Click the image to run the app, note the text of app is in Portuguese.