We recently released a set of Silverlight "How-to" videos online. This includes Scott Guthrie's keynote demo at Mix07 which shows off how to create a Silverlight 1.1 application using the Visual Studio add-in for Silverlight.
This is also a good time to let you all know that we have had ASP.Net videos and ASP.Net AJAX videos available for a while now.
Do send us your feedback on these videos. We'll be adding more from time to time, so do check back.
-- Bash