Turns out the gentleman who did the sword demo is Mr. James Williams, who is fairly well known in the combat blade community. I was most impressed with the way he cut the tatami, seemingly almost without effort. It's the same kind of impression I get from watching an experienced and talented...
http://i54.photobucket.com/albums/g110/oldepharte/th_MarythechefApril2013_zpsd9ba7280.jpgMy grand daughter, Mary (knyfeknerd's daughter) showing off her skills.
Dang, the pic should be bigger....:(