Justin Timberlake

Startup(s): Stipple, Miso Media

When not reading scripts, bum-rushing the SNL stage, or chilling with Jessica Biel, Justin Timberlake lends his celebrity (and money) to startups focused on the arts. He's invested in Stipple, a site that allows photographers to sell their images, and Miso Media, a website devoted to revolutionizing music education through technology like apps and interactive programs.