What Do 'Portal 2' And 'The Dark Knight' Have In Common?

When you were first watching Christopher Nolan's "The Dark Knight," was any part of you surprised that the movie was rated PG-13? This movie, with its intense violence (the pencil scene alone!), was approved by the MPAA for viewers aged 13 and above. And yet, when you think again, how much do you really see? [...]

Source: http://multiplayerblog.mtv.com/2011/04/22/what-do-portal-2-and-the-dark-knight-have-in-common/

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