Harry Shearer on New Orleans, media error, and not being the funnyman

Harry Shearer may be best known as the comedian who voices a litany of characters on The Simpsons and makes mockumentaries like This Is Spinal Tap and A Mighty Wind, but his new documentary is completely serious. The Big Uneasy, which screens tonight at the Denver FilmCenter at 7 p.m., tells the unsettling story of how the flooding in New Orleans was the result of man made design errors by the U.S. Army Corps of Engineers. We caught up with Shearer about the Corps' lack of response to the film, why the media has virtually ignored this story, and his shift from comedy to documentary.