Microsoft launches Windows Phone 8

Windows Phone 8, Microsoft's new operating system for cellphones, was launched on Monday and with it the software company's hopes of reclaiming a portion of the fast-growing smartphone market. Microsoft has been largely absent from the smartphone market during its most recent years of explosive growth, but market watchers predict the company will soon start to gain share after Monday's lauch.Kiefer Sutherland Jim Carrey Cameron Diaz Gisele Bundchen Renee Zellweger Carson Palmer Michelle Wie Reese Witherspoon Bill O\\\\\\\\\\\\\\\'Reilly Kate Moss