Community stuff
Agile Management Companion - APLN - Seattle Downtown
Greg - CodePlex to support Subversion

Career stuff
AlfredTh - Does Personality Matter?
Raymond Chen - You're not my manager, so I'm not going to ask how high when you tell me to jump

Silverlight stuff
Microsoft Downloads - Microsoft® Silverlight™ 1.0 Beta SDK
Reflector Add-ins Home - SilverlightLoader

Other stuff
Jim Holmes - Nice Utility to Clean and Zip Source Folders

Xml stuff
Kirk Allen Evans - Some XmlSerializer Control in ASMX