I was surprised to receive an Microsoft Certified Master plaque today via UPS. It was accompanied by a letter from Christina Yoshida, Director of Advanced Certifications for Microsoft Learning.
The welcome letter says, "Congratulations on earning your Microsoft Certified Master certification! Enclosed in this Welcome Kit are tools to acknowledge your new level of certification, the highest level of technical certification currently granted by Microsoft."
It includes a number of MCM benefits, those most important of which is access to the MCM community distibution list.