http://boxofficemojo.com/alltime/domestic/mpaa.htm?page=PG&p=.htm
You might be right there!
The highest-grossing "realistic" PG movie of all-time is....My Big Fat Greek Wedding?
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Thank you, Eddie Guerrero.
http://www.wwe.com/f/styles/photo_large/public/photo/image/2012/04/33_Moscow_04112012jg_02128.jpg