well the only real thing would be when they cut them self with a blade, pain free and it takes a few days to heal just takes a layer of skin from the forhead.. ref gives them the blade when the cameras ain't on them
the whole thing is scripted as you may know the wrestlers constantly talk to each other telling them what they are going to do even the ref he plays just as big a part as the wrestler..
also they have a microphone under the ring, so the chops, slaps kicks and slammings sound alot more then they actually are... knowing things like this just spoils watching it to be honest but it is entertainment and the way i look at it is when you watch a movie, you know its not real but its the fun in watching it and it brings you into the picture, like wrestling storylines do..
also i see a big future for randy orton iv always like the kid