Eduardo Saverin
Net Worth: $ 1.6 billion
Company: Facebook
He was recently immortalized in the movie The Social Network. He started Facebook with Zuckerberg at Harvard. When others moved to California Saverin stayed behind. Later Facebook sued him for allegedly interfering with business and insisting on keeping a 30 per cent stake; Saverin countersued. The parties settled; Saverin apparently got a 5 per cent stake and a cofounder bio on Facebook's site. Now living in Singapore, he recently invested in startup Qwiki.