If you want to see Mercury with your own eyes...
The planet will be visible near the southwestern horizon at dusk for 10 days starting this Friday.
It should look like a fairly bright yellowish star, similar to Saturn's appearance in Earth's sky.
http://antwrp.gsfc.nasa.gov/apod/ap080112.html
For an initial analysis of the MESSENGER images, see here:
http://www.planetary.org/blog/article/00001299/
