I went to see The American last night (which, by the way, has one of the best death scenes in any film) at the local megaplex, and noticed a sign stating that you had to show ID proving you were 25 yrs old to see an R rated movie. Not 18, or even 21... but 25!*
So I ask the the ticket counter girl, "So let me get this straight- you can legally kill for your country at eighteen, but you can't look at pretend killing until you're 25?" She looked at me as she handed me my tickets and said, "Theater 13, 8 o'clock."
*And don't get me started that you can't legally have a beer till 21 in this country, or that... torturing, mutilating and killing someone onscreen in graphic, step by step detail is R rated, but showing two people with exposed genitalia in the act of procreation is automatically X rated- sick country.