Justin Bieber and Zach Galifianakis' careers may not have very much in common, but both stars know how to make a funny viral video and win big at the 2011 Webby Awards. Ref: SPL274136 030511 Video by: Splashnews TV / Splash NewsTime: 01:00Splash News TV: EnglishCountry: USARights: World RightsPhoto Set:© www.splashnews.com