The Phoenix Mars Lander, a mission to explore the Martian northern arctic plain, which launched from earth on 4 August, 2007, safely landed in the northern polar region of Mars on 25 May, 2008. No small feat as this was the first successful soft landing (one not using airbags) since the Viking 2 landing in 1976.

And the results are already coming in. The Canadian Space Agencies meteorological station gave its weather report for Sol 4 "sunny but dusty with increasing dust, causing decreasing visibility. High -30C, Low -80C, no wind measurements available.

clipped from www.jpl.nasa.gov

There has been possible ice found under the lander as well.

On Sol 7 (1 June, 2008) its robotic arm scooped its first sample from the surface of the red planet.

clipped from www.jpl.nasa.gov

All seems to be going well so far.