Partnered with college buddy mark Cuban to launch Broadcast.com during early years of dot-com boom. Broadcast live sporting events, concerts. Public 1998, sold to Yahoo a year later for $5.7 billion; made 300 employees millionaires, Wagner a billionaire. Broadcast.com no longer operating. Co-owns 2929 Entertainment, Magnolia Pictures, Landmark Theatres, HDNet. One of the last of the true dot-com billionaires earned his law degree from the University of Virginia and went on to work at Akin Gump Strauss Hauer & Feld and Hopkins & Sutter, a Chicago firm that merged with Foley & Lardner in 2000. Wagner was a partner at Hopkins until 1995, when he left law against the advice of the firm's senior partner to start Broadcast.com with fellow Internet entrepreneur Mark Cuban