On April 20, 1999, two students from Littleton, Colo., attacked their school in a stunning display of violence that left America with too many unanswered questions.

How could two students pull off an attack on a high school that would leave 13 students dead and 25 injured? How did they get the guns to shoot up their school? Is it America's lack of gun control?

Whatever the question, Michael Moore's new documentary, Bowling for Columbine, has the guts to ask it. While a documentary sounds like a snoozer of a movie, Moore's creative film has the ability to invoke emotions, ranging from hilarious to jaw-dropping to highly emotional.

Famous for staging events that show social injustices rather than just discussing them, Moore runs through several schemes that achieved policy changes.

One victory is that Kmart no longer sells 9 mm bullets.

The film includes celebrity interviews from Marilyn Manson (surprisingly articulate), Matt Stone (co-creator of South Park), Dick Clark (however brief and rude), and National Rifle Association of America President Charlton Heston.

All in all, Bowling For Columbine will entertain the audience as much as it will make them think. Grade: A