I heard from somewhere that humans can become, in a way addicted, to the colours of TV/Screens etc. or the emissions given out by them. The apparant reason why people stay glued to screens or playing games is because these emissions replace a daily requirement in our bodies. It was shown that males require more of this than females.
Regarding lunatics that are apparantly 'affected by a game/movie,' it is weak will power, and those individuals must have already been mentally retarded in some way before playing or seeing a game/movie.
So I am going to go a play a lovely gory game now...Fear? I like blood...how about Prince of Persia. These will give me great ideas!!! mwahhaha!