In general most Americans will not watch a movie that does not have an American in it. As well of course, most Westerners will not watch or accept a movie plot where we are not seen as superior to the foreigners (who are usually some shade of brown or black). Its stupid, its racist but its also the way things are.
In the Mummy it takes the clever and heroic Westerners to save the bacon of the ignorant middle easterners.
With regards to Start Wars: Lucas obviously borrowed heavily from different cultures to create his Star Wars cultures. I am surprised it took anyone this long to notice it anywhere in the world.
Also the films do have massive racist overtones IMHO. Look at the Trade Representatives in Episode I (I think it is): They look and sound very Japanese, and what do they do - they organize a massive secret attack. They are untrustworthy, bumbling, ineffective and they have massive numbers of very poor quality troops that all look the same. All they had to do was throw big round glasses on the droids to make them more like the WWII propaganda the US put out about the Japanese.
Jar-Jar Binks brings to mind the stereotypes of blacks in the south - at least to me as a Canadian.
Naturally the Empires officer corps look amazingly like WWII German Wehrmacht and Nazi troops in their uniforms - although I give him massive points for the white Stormtrooper armor (perhaps we were supposed to feel some sympathy for them, I always did).
I love the SW movies but they are heavily cliche ridden and fairly biased, if not exactly racist. I think to say otherwise is foolish.