DOHOHOHO
Go read a comic book sometime, because you obviously haven't in the past 25 years. 300 Was totally kid friendly (in b4 Cake Town), Same goes for V for Vendetta, 30 Days of Night, Road to Perdition, and Wanted. All of those are very kid friendly G Rated movies meant for kids. Guns, gore, and language are very kiddy subjects.
Do you see the error in your less informed post? Here let me clarify things for you with a few examples of literary masterpieces.
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And TDK's plot was more deep than Iron Man's plot (which lacked many things).