I want to be Mike when I grow up. He knows all kinds of things about all kinds of things. His mind is like the Library of Congress. I'd love to know what kind of superhuman cataloguing system he uses to remember everything with.
I think the only topic that is really outside the scope of his massive knowledge base (and it's only a matter of time before this isn't true) is RedHat Linux administration. While I don't know much more than he does, I have a deeply nuanced auto-response for most of his questions which goes something like this, "They probably have a gui tool for that. Look somewhere in that menu thing."