Fiddler is your friend for Silverlight communications debugging - Get help with debugging Silverlight communications. Fiddler intercepts and logs all HTTP traffic.
Web Cast and Digging Deeper - Jesse Liberty's post on switching, pages and passing information between them. If you are interested see the first video on the topic at silverlight.net.
Custom Silverlight Controls: Creating a reusable MessageBox dialog. (Part I) , (Part II - The Popup) - Azret Botash from DevExpress has a detailed series on creating MessageBox with mouse dragging, modal window and more.
A Customizable Silverlight Star Selector Control - Voting control from Page Brooks.
Do You Want to Help Implement Interesting Ideas? The Blend Team needs you! - The Expression Blend Team at Microsoft is looking for a Program Manager. Check out the link to find more details.
Enter The Continuum Show - Adam Kinney will be exploring the Microsoft technologies, showing new features, patterns from experts and interesting samples. There is one video uploaded, we are waiting to see more.
Play Olympic Games in Silverlight - Are you ready for the Olympics? Have some fun with a bunch of Silverlight games :)