For years, Paul Allen has been leading a double life. By day, he's known as the co-founder of Microsoft, a company which needs no introduction. He currently heads Vulcan, Inc.; its holdings include Ticketmaster, the Seattle Seahawks and Portland Trailblazers. With an estimated net worth of $15 billion, Allen routinely ranks high on the Forbes 400, and his philanthropic activities add up to lifetime giving of over $1.5 billion. But that's only part of the story. Allen is also a lifetime