99flake's link made me laugh, but seriously, I find that if I get my kids to throw banana skins out from both sides of the car, we can get other cars to skid in all directions - beat that Mario!
PS for American readers.... he's only joking!!

http://img391.imageshack.us/img391/8858/mariogg7.jpg

this would just encourage software piracy.

Some of my best mates and blokes are Duke Nukem!

Hasn't it been shown that it's the deluge of prescription psych-drugs that kids(/adults) are exposed to that causes the issues already?
In that sense banning games is like banning roofs because people on PCP jump off them thinking they can fly.

Oh and Deimios your comment "5. Stop blaming everyone else for YOUR mistakes as a parent." is unwarranted because it's always the politicians and such that complain and blame games and almost never the actual parents.

1. Violence is in the nature of man, whether physical (males usually) or psychological (females usually).
2. Living out your violent urges in some virtual world actually decreases agressiveness in Real Life(TM).
3. If you shield your kids from all things violent and evil: how will they defend themselves when you are not around, how will they defend their children when you are not around? It all trickles down to the age old saying: Give a man a fish and he's fed for a day, teach a man to fish and he's fed for a lifetime.
4. Interesting how modern society regards children as some kind of fragile sub-humans that must be protected. Teach your kids to defend themselves. It's what parenting should be about: Preparing kids for life. Shielding them from all things bad is actually doing the opposite.
5. Stop blaming everyone else for YOUR mistakes as a parent.