He is trying to stop violent video games like GTA. I've never played GTA, so I have no opinion on his efforts, but...
Jack went on national TV and said he would pay anyone $10,000 to make a video game modelled on him. A group of game mod'ers changed GTA so you played the role of Jack and go around killing violent video game makers. They demanded their cash, and Jack renigged:
http://games.slashdot.org/games/05/10/17/1750203.shtml?tid=133&tid=10
Penny Arcade had the nerve to mock Jack over all this:
http://www.penny-arcade.com/view.php?date=2005-10-14
And now Jack is trying to get the Seattle Police to raid P.A., and arrest them:
http://www.livejournal.com/users/gamepolitics/110152.html
I am rapidly forming the opinion that Jack is a complete and total smeg head.