NOTICE
This addon is no longer maintained by me, if you are interested in taking it over then please contact me via the Issues section. (You are welcome to submit it to the official Kodi Repo - just make sure you remove my name from it before you do it)
The Suitability addon allows you to get an "overview" of the content of a movie, things like the sex/violence/language content, so you can make a judgement as to the suitability for your children. (Or your grandmother!)
The addon uses the following sites to retrieve information:
Suitability allows you to view a summary star rating of the movie content and then drill down to view the detailed text description of the movies content. It is available via the movie context menu or launched from the Kodi Programs section (where you will be prompted for a movie name to search for) or there is also an option in settings to add it to the Confluence Movie Information Dialog.
For more information you can have a look at the wiki entry: