Sometimes I wonder if the Japanese are just more honest about human nature. Even though it is a fairly restrictive society, they are comfortable with expressing themselves in a way Americans surely aren't. I think it's an interesting topic to explore further.
Here's a great example. A mobile stress reducer. The sign 'A place for venting anger.' You can go into this truck and break dishes for 200 yen. How awesome is this!?! I should set one up around here. I'm sure it would do a ton of business.