GO RAO-UL
Sweet pictures. (Yeah, you know you're a space cadet when you can describe a cratered monochromatic rockball as "sweet".)
I'm struck by what appear to be longitudinal features in the image above. I say "appear" to hedge my bets, because I'm only assuming that the view is showing the planet somewhat upright and that the visible pole is where the features converge top right. But it's hard to shake the impression that the planet is cracked like the segments of an orange. That close to the sun, semi-tidally-locked, I can believe that it's been pretty severely stressed.
The things we'll learn once Messenger goes into orbit...