Sundance Celebrates Documentary Filmmaking (VIDEO)

03/29/2010 05:12 am ET | Updated May 25, 2011

Four documentary giants gathered in Park City, Utah, for a celebration of documentary filmmaking during the Sundance Film Festival.

Alex Gibney ("Casino Jack and the United States of Money"), Davis Guggenheim ("Waiting for Superman"), Mark Lewis (Cane Toads: The Conquest 3D") and Lucy Walker ("Countdown to Zero") talked about making documentaries in the current social and economic climate.

"I think it is a golden era of documentary filmmaking, if not a gold rush," said Lucy Walker.

Davis Guggenheim added, "I think a lot of us start making documentaries because we want to change some injustice."

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