Great surprise shot! For the noise: I'm playing with Noise Ninja, the results are pretty amazing. I tested it for instance on a picture shot with ISO800, two stops underexposed, RAW, D200 camera. First I pushed the exposure two stops up in Nikon View NX, which was got well exposed but as grainy as your image. After that I applied twice Noise Ninja. The result is a softer image without almost any noise.