When they're not busy making music or starring on the big or small screen, Hollywood overachievers find time to invest in the world of technology — sometimes with real success. Who knew that before the infamous Kim Kardashian: Hollywood video game came out, she had already founded a website? Who guessed that Jay Z would release his own music streaming site? Or would you have ever predicted that Tom Hanks would release an iPhone app that would shoot to No. 1 on the app store? These celebrities have managed to transcend the entertainment industry and leave a real impact on tech.
— Additional reporting by Karenna Meredith