He's the billionaire owner of the Dallas Mavericks.... here's a few links about him: http://abcnews.go.com/onair/2020/2020_000504_billionaire_feature.html http://events.yahoo.com/about/mark.html http://espn.go.com/page2/s/questions/cuban/010510.html He started broadcast.com and became a billionaire when he sold to Yahoo! (I believe).... he bought the Mavericks shortly thereafter and runs the team like a fan would. To be honest, he's done a lot of great things for the Mavs....
