Thai boxing, or Muay Thai is the most popular martial art in Thailand, though it is practiced around the world today. There are also some Finnish world champions in Muay Thai.
Muay Thai is not only serious sport as can bee seen in this video I took outside MBK Center in Bangkok. It was sort of fun to follow this friendly fight with blindfolds, even the knockout of the referee (at 23 sec in the video). 
