Has anyone come into the situation where a new player is a veteran video game player but has never done table top?  I have been blessed with this in the form of a young player (we'll call him J) who has joined a large group of somewhat older and more experienced D&Ders.  In one of our first sessions we got to see the difference.  The mighty adventurers were making their way through a mountain pass when they came across a frozen party.  From the look of horror on their frozen faces, and the fact they were upright, the party took this as a warning and quickly took to scanning the skies in search of danger.  That is, everyone except J.  He opted to look over the frozen guys and then asked the mage to detect magic.  Seeing no harm the mage proceeded to and found something magical on the belt of one of the men.  The loud noises he made had everyone watching in surprise as J cleaved the body in half.  Their expressions turned to incredulity as J then tied the halfbody onto his horse, then into horror that night when he defrosted the now decomposing body in front of the campfire.   Thinking they would teach him a lesson they refused to help him fight off the scavengers that were attracted by the smell of rotting flesh.  I'm not sure if it taught him anything, but I certainly have learned a lot.