Japanese Erotic Game Shows?

I'm sure there are many, but my google skills seem inadequate to find any good ones. Something like the one described here
http://www.youtube.com/watch?v=X9LGlOPpeSY
in the beginning. Or something involving full/partial nudity.

Or something fun and sadistic like
http://www.youtube.com/watch?v=plrRnLvVBQ8

Thanks.