There's also the whole submissive geisha thing. I think a lot of guys get off on that too, though few might admit it. Certainly <i>I</I> would never admit it.
I never really thought about this until high school, where I made friends with a Chinese American girl named Grace. Grace was totally hot, a blast to be with, smart, funny, and super cool. So I don't know if I like asians per se, or if I just liked Grace....