Lots of celebrities do advertising for products in Japan, in fact just about anybody who is famous has done an advert here . They get paid huge amounts of money knowing that they won't be seen in the west and thefore their image won't be tarnished.

You can see examples of celebrities selling their souls to advertising at this website here.

My personal favourite is the Sean Connery being very patriotic to Scotland and selling Japanese whisky.

There are also some great ones of David and Victoria Beckham.