Paul wasn’t as famous as Bill Gates or Steve Ballmer being the number three guy at Microsoft but he will always remain essential to the history of personal computing. He was also pretty savvy too. Paul left Microsoft in 1982 (the day-to-day stuff) while holding on to all his stock despite Gates trying to buy him out in 1983 for a mere $5/share. This proved to be wise since Microsoft going public made him a billionaire overnight. He then went on to spend his fortune on numerous things he’s probably more famous for, namely the museum he founded with Captain Kirk’s chair on display.
Although I’m not a big fan of either Windows-driven products or the Xbox, Paul should be a key figure in the history books alongside Grace Hopper, Steve Jobs and Thomas Watson Jr. of IBM.