Michael Moore has made a career of butting heads with bigwigs. His documentaries, laced with satire on politics and society, have taken aim at General Motors Corp. (Roger & Me), the National Rifle Association (Bowling for Columbine, the 2002 Oscar winner) and U.S. President George W. Bush (Fahrenheit 9/11). Still in the works is Sicko, a none-too-flattering perspective on the U.S. health-care system. And he's overseeing the second annual Traverse City Film Festival in Michigan, which he established last year with author Doug Stanton and photographer John Robert Williams. More than 70 films, many independently produced, will be shown in...