Introducing the Microsoft Certified Master and Certified Architect for SharePoint

The Master program is designed to be the top-tier technical certification for SharePoint Products and Technologies for years to come. The goal of the MCM is to provide a means for training, recognizing, and developing the top SharePoint technical experts in the world. Specifically, the MCM is intended for technical professionals whose primary responsibilities include designing, building, configuring, deploying, and supporting large, often complex, MOSS 2007 environments.

http://blogs.msdn.com/sharepoint/archive/2008/11/10/introducing-the-microsoft-certified-master-and-certified-architect-for-sharepoint.aspx