Sabah el-Heir Ibrahim
John Clements is the founder & head of ARMA, and one of today's leading (though controversial) historians of western martial arts & weapons. I met him in a seminar a few years ago and like his approach most of the time. One of his best known experiences was to refute the common belief that a sword must be razor sharp (2 vids):
http://www.youtube.com/watch?v=ZR9k23U-P10
http://www.youtube.com/watch?NR=1&fe...&v=fFQ4aanmupU
Here is a nice sword & buckler demonstration video - note: these are reconstructed techniques.
http://www.youtube.com/watch?v=uNF1bKo0v9k