With all his Vulcan logic, Spock might invest in this company. Brainy billionaire Paul Allen organizes his business and charitable ventures under Vulcan Inc. The firm holds the Microsoft co-founder's remaining stake in the industry-defining juggernaut, as well as stakes in dozens of companies involved in technology, telecommunications, multimedia, energy, and real estate. Portfolio holdings include cable company Charter Communications and privately built spacecraft SpaceShipOne. Allen also owns professional sports teams, inclusing the NBA's Portland Trail Blazers and the NFL's Seattle Seahawks.