Metal Textures

Anyone have a quick and easy way to make metal textures? For example, the kind you would find on the armor plates of, say, the Millennium Falcon, which I imagine would have an unfinished rough appearance that would look slightly pebbled and pitted, but nothing over the top or super memory-intensive (the way vector and post-script fills seem to be). Really just looking for a way to add a weathered appearance.

I've gone through the metal textures and various settings, and so far, nothing looks quite right. Hoping that one of the more experienced users will have a tip for creating that rough finish in battleship gray.