Web stuff
Greg - 15 Second Introduction to Fiddler
Miguel de Icaza - ASP.NET AJAX in Mono/Grasshopper

Database stuff
Andy Leonard - A Follow-up to Database Professionals: An Enterprise Requirement
Steve Lamb - Windows Sharepoint Services failed to create the configuration database System.Data.SqlClient.SqlException

Silverlight stuff
John Bristowe - Auto-code generation for Silverlight Controls
Tim Sneath - Preparing for Silverlight 1.0 RC and Beyond

Other stuff
Ayende Rahien - Blog Posts vs. Articles
Mike Pope - Jakob Nielsen blog: don't blog
Tim Anderson - CodeGear abandons .NET Windows Forms?
Rob Relyea - May be helpful: Ngen.exe executequeueditems
Jb Evain - Mono.Cecil have moved

Career stuff
Scott Hanselman - Hanselminutes Podcast 72 - Be a Better Developer in Six Months
Dave Burke - Presentation on blogging at the Vermont Consultants Network

Builder stuff
Grant Holiday - MSBUILD DevEnv task for building Visual Studio setup projects