Canon 5D MarkII's high ISO

I was thinking the other day that I wasn't thrilled with the color straight out of camera from the Canon 5D Mark II, but everyone raves about the high ISO capabilities. I decided to test out its highest - H2 - today on Olive. I shot RAW and made sure the exposure was correct, then I punched it up a little in post... there is definitely noise, but I was able to shoot this at 1/640, f1.2 which is pretty fast considering how dark it was in the room. Way to go, Canon!