And here's that optical navigation photo of Mercury from MESSENGER that I lamented not having yesterday. It's not much to look at yet; it's funny how most planets look pretty much the same from long distance and high phase (that is, when they're illuminated as a crescent). That's definitely Mercury, but I'm sure you'd have no trouble believing me if I told you that was Venus or even Uranus.
NASA / JHUAPL / CIW
MESSENGER's first view of Mercury
MESSENGER snapped this image of a crescent Mercury through its narrow-angle camera on January 9 when it was about 2.7 million kilometers from the planet.
I'm not sure if we'll see any other pictures from MESSENGER until next week (if then); they were careful at this morning's press conference to state that it may be a week or even longer before they release any pictures. Stay tuned.