This is one of my favorites. A japanese gameshow where they have to be quiet in a library and do stuff to eachother and laugh silently.
http://www.youtube.com/watch?v=L4XYXrPOnXQ 
The testicle smasher game:
http://www.youtube.com/watch?v=VQ2P0...related&search=
A gameshow where they can't laugh at someone learning english.
http://www.youtube.com/watch?v=-YwoP0thR1k
Why don't we have stuff like this in English?