The FTC recruited 13- to 16-year-olds, unaccompanied by a parent, to attempt to buy R-rated movie tickets, R-rated movie DVDs, unrated DVDs of movies that were R-rated when first released in theaters, music CDs carrying a Parental Advisory Label (PAL) that warns of explicit content, and video games rated M that may be suitable for persons age 17 and older.

FORBES: Connect

This continued improvement and upward trend is at an all-time high for the video game industry and exceeds every other entertainment format, including sales of music with parental-advisory labels, R-rated movie tickets, and R-rated and unrated DVDs.

FORBES: Connect

One-third of underage shoppers bought a ticket to an R-rated movie, up slightly from 28 percent in 2009.

FORBES: Connect

Those are extraordinary home video numbers for an R-rated movie that's in a foreign language and features graphic violence.

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A.A. rating board, counting six F-words, gave the movie an R rating, which means that the kids who might benefit from the movie are unlikely ever to see it.

NEWYORKER: Bully

In an interview with Deadline Hollywood today, Del Toro said that he wanted the movie to be R rated while Universal was pushing for PG-13.

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Based on a best-selling novel by Isaac Marion, the movie tells the story of R, a zombie who seems to come back to life thanks to love.

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Nothing prepared me for this movie's astonishing energy and R-rated violence, or its bold, exuberant humor.

WSJ: -

The MPAA has never revealed its guidelines for what qualifies a movie for a G, PG, PG-13, R or even the dreaded NC-17 rating, but Hollywood producers have a second sense for the tipping points between categories.

WSJ: Roger Ebert on Movie Ratings

But R movies are a hard sell because they cut out so much of the movie-going population (teenagers).

FORBES: Guillermo Del Toro Makes Hollywood Nervous