The Japanese seem to specialise in game shows based upon human suffering. In the 1980's several UK programs (usually hosted by Chris 'Bonkers' Tarrant), were based upon excerpts from several Japanese game shows. I think the main one was called 'Endurance'. "Oh how we laughed..."
I enjoy two current Japansese-gameshow guilty pleasures at the moment; Ninja Warrior and Unbeatable Banzuke. Of the former, several Olympic gymnasts have entered the competition and done quite well (including the Hamm Brothers and Jordan Jovtec). The latter seems to be a little more niche and has some incredible bike-skill based events although for me 'Hand Walk' is king.
Finally Olympian Paul Terek showing his hustle: