The Microsoft Most Valuable Professional (MVP) program recognizes community members who use and evangelize Microsoft products. Of the 4,000 MVPs worldwide, more than 270 have expertise with SQL Server - you can see the list of SQL Server MVPs here - and many of those are active volunteers with PASS.
You'll find SQL Server MVPs presenting at PASS Virtual Chapters, local Chapters, and SQLSaturdays around the world, speaking at and attending PASS Summit and PASS SQLRally, and volunteering at all levels of the organization - including on the PASS Board of Directors. If you see an MVP at a PASS event, they are more than happy to answer your technical questions and tell you more about the MVP program.
How Do You Become an MVP?
MVPs are not Microsoft employees: MVP awards are presented annually to IT professionals based on their community activity over the previous year. There are four award dates each year: January 1, April 1, July 1, and October 1. MVPs are chosen for their contributions to the Microsoft user community, including (but not limited to):
Providing correct answers to questions posted in forums and newsgroups
Providing presentations at conferences and events
Running and/or contributing to community-based websites
Providing helpful technical blog posts
Presenting at local user groups and code camps
Volunteering with large SQL Server organizations (like PASS)
Visibility is important to the MVP program. The more people your efforts touch, the better your chances of being recognized as an MVP. You can find more about the MVP program at Microsoft’s MVP site.