If you have noticed, Asians are hardly portrayed in the media other than as their stereotypical counterparts. Examples to illustrate this point:
The Fast and the Furious: Tokyo Drift - Although it was set in Japan and there were a number of Japanese extras, the main character was a white man, and the Japanese characters were viewed in a semi-stereotypical light.
The Ninja Assassin and Rush Hour movies: Although there is an Asian man as the main character, they are seen in the same light everyone knows them to be - karate/kung fu fighters and ninjas.
Why is it like that? How do we change it?