'This Film Is Not Yet Rated' -Sept. 1

'This Film Is Not Yet Rated' -Sept. 1 Documentary filmmaker Kirby Dick acidly takes on the Motion Picture Assn. of America's oft-questioned rating system, its high-profile former President Jack Valenti and engages private investigators to out the members of the highly secretive ratings board. Filmmakers including Kimberly Peirce ("Boys Don't Cry"), Matt Stone ("Team America: World Police"), Atom Egoyan ("Where the Truth Lies") and Wayne Kramer ("The Cooler") share their adventures in creative editing. NC-17 for some graphic sexual content.