A long time ago in a country not so far away (America) a very angry man named Jack Chick wrote a very angry comic about roleplaying and its effect on the youth of then. It was called Dark Dungeons, and I have a genuine copy of this little pamphlet in Dundee. Then a bunch of dudes reworked it to be a little more realistic, and it became Dork Dungeons.
The link above has both comics. The vengeful Christian comic is the one on the (where else) extreme right (of your screen), the Geek one is the left.