10/29/2010 03:23 am ET | Updated May 25, 2011

Huffington Post Celebrates Its 2010 Game Changers (VIDEO)

The Huffington Post celebrated its 2010 Game Changers Thursday evening at an event in SoHo. Sean Penn, who was named a 2010 Game Changer for his work in Haiti, was in attendance, as were Game Changers Mayor Michael Bloomberg, Imam Feisal Abdul Rauf, Nora Ephron, Bethenny Frankel, Prabal Gurung, Mika Brzezinski, Paulina Porizkova, Biz Stone, Mayor Cory Booker, Geoffrey Canada, and Ted Olson, among many others. Anderson Cooper, Jann Wenner, Dylan Ratigan and more were there to introduce and honor HuffPost's Game Changers.