Joe has been a repeat MVP for a very long time. He made his initial mark in the industry by answering questions about LDAP programming using the old NNTP (Newsgroups) forums. His follow-up was to write a book about LDAP programming. This work, The .Net Developer’s Guide to Directory Services Programming, is a great reference book and currently features prominently on my bookshelf.
Joe’s greatest contributions outside the technical arena stem from his three children (future taxpayers!), and usually involve volunteering to help with things they love (sports, theater, etc).