Same here! This is so interesting.
From what I know, i'm all Italian. My parents came here to the US in the early 70s. Many generations before them also nothing but Italian. I'm so curious though what else might be there. I'd be so interesting to find out.
There are pricier Genealogical DNA services out there that will search along BOTH your parents' DNA -- the National Geographic one only looks at 12 markers and searches back along your father's Y-chromosome (if you're a guy) or back along your mother's mitochondrial DNA (if you're a gal).