Search Community Toolkit – The Search Community Toolkit is comprised of a number of tools and code samples that have been contributed to enhance the Microsoft search experience

Microsoft Enterprise Search Blog

Download Sharepoint Designer for Free

Azure – David Lem

Tom Rizzo – Overview of Sharepoint , MOSS 2007 & WSS 3.0 

Heather Solomon – Branding Sharepoint

Ryan Duguid – Introduction to Record Management

Arpan Shah – Microsoft Search Server

MS Search Server – Federated Search – complies OpenSearch

Christophe Fiessinger – Innovation Process Mgmt using MS Office Enterprise Project

David Airapetyan – Advanced Infopath Solution Architecture

MOSS 2007 Monitoring Strategies – Luis Camara Manoel, Shane Young, Todd Klint

Microsoft Solution Accelerators

Simplify External Collaboration with the Extranet Collaboration Toolkit for Sharepoint – Luis Martinez, Dave Mowers

Protecting MS Sharepoint with Data Protection Manager 2007 – Jason Buffington

*Will be adding more in time*