When I first joined Microsoft as J# product manager, I was taking over the responsibility from Tony Goodhew. Given that he held the reigns over J# prior to me, he fell into an unofficial mentor role for me. I went to Tony almost daily for questions about J#, the JLCA, the history of J++, how to upload stuff to MSDN, the politics of dealing with “Java at Microsoft” (ok, the Java language at Microsoft), and Tony's favorite beer.
For a good description of Tony (including a picture) check out my former blog entry.
Check out Tony's blog. He's probably one of the smartest and most entertaining people at Microsoft, so you can be sure he'll always have something good to say.