There is a famous psycological experiment where <wbr />subjects were ordered to administer a shock to a<wbr /> (fake, but real as far as they knew) subject in<wbr /> another room.  Many went on through the cries o<wbr />f agony from that subject until they had apparen<wbr />tly killed him.  It&#39;s a fascinating, but unnervi<wbr />ng experiment.  Some people apparently find this<wbr /> movie a little too unnerving and walk out.