I get asked this a lot, actually! Just yesterday, even. :P A lot of people think I'm part Latina, but only when my hair is curly, for some reason. I suppose it's also because of the area where I live - here in San Antonio, a lot of people have Mexican heritage in the mix!
I'm actually Polish, but as one of the people asked me put it, "Well, I asked because you don't look completely Anglo-Saxon-white-bread." Haha!