Community Day Slide deck and demo - Gill Cleeren published his presentation materials from Community Days 2008 - a sample Digg client and a Silverlight presentation. The presentation contains an overview of almost everything concerning Silverlight - controls, layout, networking, databinding, brushes, transformations, user controls, styles and more. Great resource!

Silverlight Experiment: Create a PullDown Menu using Storyboards - Scott Barnes shows step by step how to implement a PullDown menu in Silverlight using Storyboards and Blend. Looks nice.
3rd Party Silverlight 2 Controls - Shawn Wildermuth makes an overview of the existing third party controls. The final release of Silverlight 2 is almost here, but it seems that there is still no good suite of comprehensive, fully featured controls.
Silverlight Control Builder Contest 2008 - Page Brooks and Dave Campbell are organizing a Silverlight contest. Their aim is to gather free Silverlight controls that all developers can use in their applications. Awesome prizes are available so don't ponder if you should join or not!
How to get your Deep Zooms working with Blend - Alex Knight dicusses the problems he has faced building a DeepZoom applications and more specificly bringing them to work in Blend.