Great photo, Greg. As a very happy Canon 5DmkII shooter who likes to make large prints, seeing the Nikon D800/D800E cameras has definitely made me go "hmmm".
The image quality of the 36 MP is certainly better than I'd expected. I had thought that the small pixels would mean a trade off with high noise levels / poor dynamic range, but the pics that I've seen so far don't seem to show this.
I'm too heavily invested in Canon lenses to make a switch, but if I were buying it all again I'd certainly be thinking...