Here is the latest in my link-listing series. Also check out my ASP.NET Tips, Tricks and Tutorials page for links to popular articles I've done myself in the past.
Debugging Script: Dumping out ASP.NET Session Contents: Tess Ferrandez from the ASP.NET support team has an excellent post that details how to use the windbg debugger to dump out real-time information about the current state within the ASP.NET in-process session store (# of sessions, what their current timeout is, and the memory size of the objects within each session). She has a great script you can just run "as-is" in this article, as well as an in-depth discussion about how it works. Very useful if you are ever trying to figure out why your application is consuming a lot of memory, and suspect it might be session state related.
Facebook.NET: Earlier this summer Nikhil Kothari from the ASP.NET team posted a really cool framework for developing ASP.NET based Facebook applications. You can learn more about it from his blog post here, and download it from his CodePlex project here. Steve Trefethen last week posted a VS starter kit for Facebook.NET which makes it even easier to get started.
Halo 3 Game Guide: Halo 3 ships this week, and no doubt many people will find themselves afflicted with a sudden illness that requires them to stay home one day this week. To help get you ready, watch one of the High Definition Halo3 Videos here (for a lower resolution video click here), and browse the Halo3 Game Guide here. Both are built with Silverlight 1.0.
WPF and Expression Blend
Hope this helps,