Kai Huang, CEO, RedOctane (Age: 36)
Alex Rigopulos and Eran Egozy, Cofounders, Harmonix (Ages: 39 and 37)
When Kai Huang invented the faux-six-string controller and Alex Rigopulos and Eran Egozy dreamed up the games for Guitar Hero and Rock Band they created the future of rock and roll. MTV bought Harmonix (which owns Rock Band and designed Guitar Hero) for $175 million, and Activision snatched up RedOctane (which owns Guitar Hero and manufactures its guitar-shaped controllers) for $99.9 million. The hidden value in those acquisitions? They are digital platforms for music distribution. Since 2007, Rock Band players have downloaded more than 21 million songs at $2 a pop. In May, Mötley Crüe released a single on Rock Band. In September, Metallica's new album, Death Magnetic, was offered to Guitar Hero players the same day it hit stores. And in October, MTV landed the Beatles, whose catalog has long remained beyond the reach of iTunes. Huang, Rigopulos, and Egozy now lunch with the stars they used to see in concert.