IAmA ESRB employee. I help decide if your game is E for Everyone or M for Mature. AMA!
I work for the Entertainment Software Rating Board (ESRB), the only organization that literally looks at every single video game before it is available on store shelves. It is an interesting job and very few people actually know what the job entails. I am bound to an NDA but I'll provide as many answers as I can.
As far as proof, I cannot show much but this is the entrance to the office: http://img96.imageshack.us/img96/183/esrbv.jpg
Gotta go, guys. Thanks for the questions!