Ashley sends in these links that she found after watching, “This Film is Not Yet Rated.” They are to the movie / media rating boards from other countries and they include much more description about why particular ratings are given to particular films.

British Board of Film Classification: http://www.bbfc.co.uk/about/index.php
Motion Picture Association of America: http://www.mpaa.org/

Here is the site for the MPAA: http://www.mpaa.org/index.asp