Japanese Table Manners

Japanese Table Manners
When drinking alcoholic beverages, it is a Japanese custom to serve each other, rather than pouring the beverage into one’s own glass. You are supposed to periodically check your friends’ cups, and serve them more once their cups are getting empty. Likewise, if someone wants to serve you more alcohol, you should quickly empty your glass and hold it towards that person.
While it is considered bad manner to become obviously drunk in some formal restaurants, for example in restaurants that serve kaiseki ryori (Japanese haute cuisine), the same is not true for other types of restaurants such as izakaya, as long as you do not bother other guests.
Do not start drinking until everybody at the table is served and the glasses are raised for a drinking salute, which usually is “kampai”. Avoid using “chin chin” when drinking a toast, since in Japanese this expression refers to the male genitals.
Individual vs. Shared DishesIt is common to have several dishes being served that is to be shared. Unlike western culture where food is served individually, in Japan, dishes are shared because it’s part of their food culture. If you are being served shared dishes, you are supposed to move some food from the shared plates onto your own plate by yourself, using the opposite end of your chopsticks (if you have used them already) or with special chopsticks that may be provided for that purpose.

from - http://everyday.3yen.com/2007-02-01/japanese-table-manners/