Ninja Warrior, or "Sasuke" is definitely one of my favorite shows. Athletes and competitors come from all over the world to compete in Japan twice a year to see if anyone can actually conquer all four stages of the course. However, the course is extremely difficult to complete and as a result, there have only been 3 competitors in over a decade of the show's existence that have actually completed all four stages.
The first stage is difficult enough to eliminate most of the competitors but is fairly easy for some of the veterans of the course. Some of the obstacles have included a rolling log, rope climbs, running up a 20+ foot ramp and jumping from a sliding pipe. Competitors must complete the stage within the allotted time. (The time for the stage below was 120 seconds).
The second stage becomes much more difficult as the obstacles become more upper body based, such as this particular called the "salmon ladder" where the competitors must use the bar to propel themselves upwards on the rungs of the ladder.
If competitors are able to complete it within the allotted time, they advance to the third stage, where some of the obstacles appear to be nearly impossible. There is no time limit for the third stage but there is often very little time to rest since some of them require going from one obstacle to the next in transition using only upper body strength.
Unfortunately for this competitor, he was disqualified for illegally using his legs when climbing up the board. The rules are very strict which makes the course that much more difficult.
The final stage is the most difficult and not every competition will have a competitor who actually reaches this stage.
This stage is usually a wall climb or rope climb for the first portion and then a rope climb to the top. The competitors usually have 40 seconds to complete it. By this time, the competitors are usually drained from the previous 3 stages and have very little left in the tank to complete this stage in the allotted time.
It's a great show for anyone who appreciates strength competitions or those who are interested in weight training and fitness, since many of the competitors spend months training for this event.
The show's popularity has caught on in the US and is shown regularly on G4tv. They also hold competitions where the winners are sent to Japan to compete on the show. Be sure to check that out whether you're looking to be a competitor or a spectator.