Mafia has an ESRB rating of M (mature) with the content descriptors of blood and violence.
Mafia 2 will be rated an 18 (or M for mature)
It is rated M for violence, sexual content, nudity, drugs/alcohol, and language.
It is rated M
There isn't a TV rating "M".
No it is not it is rating PG-13.
There is no "M" rating for movies, only for video games. Transformers was rated PG-13
Infamous has not yet been rated. Rating Pending. Most likely rated T-M.
Yes, there is the AO (Adults Only) rating.
The book 'My Sister's Keeper' is rated M.
It is Rated M for Mature
Rated M for Mature 17+
Although the rating is pending there is little doubt it will carry an M rating in the USA