Just to add to the discussion, I grew up in Japan (11 years out of my first 18). At the time there was a large American military presence there. The kids who were the result of Amrican dad/Japanese mom unions were looked upon quite disfavorably by the pure Japanese. However, when they got old enough, many of these "ainoko's" became very popular models. The mix of features was found desirable and attractive. It's interesting watching this discussion progress and the article posted by bushi was excellent.

Before they made me they broke the mold!
http://home.roadrunner.com/~kflach/