Filmmaker Michael Moore’s huge success with “Bowling for Columbine” has “energized nonfiction filmmakers and piqued moviegoers’ curiosity about fare drawn from real life, and encouraged distributors to put more documentaries into theaters. But this doesn’t mean his style of documentary – sar- donic, polemical, and propelled as much by his own ego as the cause he’s fighting for – will now dominate the field.”