Not only an insightful review, I found this last comment worthy of quoting:
The movie is rated R, so that the Columbine killers would have been protected from the “violent images,” mostly of themselves. The MPAA continues its policy of banning teenagers from those films they most need to see. What utopian world do the flywheels of the ratings board think they are protecting?
That’s pretty interesting coming from someone who is so important to the movie industry.