Personally? I don't know any masters. I've met a couple people who called themselves masters. However, I know a crap load of people who are willing to fight TKD fighters. However, I will never give someone respect that attempted to use his style, got punched and kicked and then attempted to throttle his opponent. One of the comments for the vid (who knows if its right or not) stated that the fight was agreed to be a standing fight only.
How can you even attempt to call yourself a master if you can't follow simple rules you agreed to? Since when is tackle and throttle a kung fu move? The gracies may be ego maniacs but even they can pay attention to rules.