Ninja Warrior is a Japanese obstacle course show in which 4 stages must be completed, usually within a set time limit, involving many difficult physical challenges.
  
http://en.wikipedia.org/wiki/Sasuke_(TV_series)

This is the second competition of the show, broadcasted by the American channel G4, in which the original commentators are used with english subtitles, and the only American input is with the intro and recapping events seen.