What do you do after building PowerShell? Tweet, of course. Jeffrey Snover (@jsnover) -- now a lead architect for Windows Server at Microsoft -- is a rich source of information about all manner of topics. While many of his peers are content to parrot TechNet blog posts and call it a day, he makes it a point to cultivate other sources to provide the full conversation. He's also unfailingly positive; expect him to answer the tough technical questions with an emoticon, an exclamation point or both.