MARTIAL ARTS DEMOS, TRAINING,EXHIBITIONS,ETC.

Most of you have seen,if you have an interest of some kind in martial arts,numerous demonstrations, exhibitions,tournaments, and any number of instances including DVD's,movies, films, and have read books,etc. talked with people, and so forth and have quite a good idea or notion about martial arts,especially if you have spent years at such. BUT MY QUESTION IS: HAVE YOU EVER SEEN SOMEONE DO SOMETHING IN MARTIAL ARTS THAT RAISES THE HAIR ON THE BACK OF YOU NECK OR HEAD? I don't mean anything that just interest you, is an outstanding TECHNICAL performance , an exciting performance, or 'crowd-pleaser' but one in which you realized you were standing in the very face of death? Of course, it was not done to kill you or scare you or the like but to instruct you, to show you what the art really is? I suspect very few persons on the contemporary martial arts scene have ever had such an experience and never will. I suspect that most will never have such an opportunity for many reasons. But if you should be fortunate enough to have seen such a thing and experienced the hairs rising on the back of your neck as you observe such, then you will know what I mean. No about of verbalisation on such will prove anything or give you any insights.