Welcome to the world of owning an Apple product. They're pretty rugged for what they are, but when they do get a scratch boy... you notice it. Not because they're not scratch-resistant enough, but because we love our hardware, and want only the best for it.
A few weeks into owning my 17" PowerBook, the writing piece of a ball point pen (don't ask) got stuck under my PowerBook and left some DEEP scratches.
You will learn to live with scratches on your lovely hardware. There is no way to avoid them really. Chicks (and dudes) dig battle scars anyway.