MIX07 started today and Microsoft is already releasing new stuff. Today, they released 1.1 Alpha of Silverlight which now include .NET support. This means you won't be stuck using JavaScript to manipulate your XAML if you don't want to.
If you are interested in learning more about Silverlight, there is a ton of great info on silverlight.net. The QuickStarts are in the same usual format you may have seen with the ASP.NET quickstarts. Its a good way to jump in and get something working very quickly. I'll be posting more on Silverlight soon (if Orcas ever finishes downloading).
Silverlight QuickStarts and More
Read the complete post at http://www.dotnettipoftheday.com/blog.aspx?id=352