The MRO has imaged the landing site of the Mars Pathfinder landing site and its surroundings. Interestingly, it appears that the rover, Sojourner, actually moved a bit on its own after communications was lost.
The MRO has captured a shot of what appears to be a natural "bridge" on the surface of Mars. I expect the conspiracy theory folks to be all over this real soon now.
With powerful instruments on both the ESA's Mars Express and NASA's MRO, scientists are starting to peek beneath the surface of the red planet.
A "movie" showing Opportunity as it explores Victoria Crater.
It does not look like I'll have time to post individual comments and links for each of these. Here are thirty-one new images from the HiRISE camera on the MRO. Don't forget to download the recommended viewer.
One of the recently released images from the MRO shows the landing site for Mars Exploration Rover Spirit.