Historical maps?
When I were a lad, this was all Martian dunes.
Users of the Martian part of Google Earth will be delighted to hear that it has received enhancements. The new virtual-Mars features include historical maps of the red planet, and up-to-date imagery from spacecraft in orbit above it. The latest updates were put together in cooperation with NASA's Ames research centre. The …
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Or alternatively...
http://qt.exploratorium.edu/mars/opportunity/ and
http://qt.exploratorium.edu/mars/spirit/
gets the raw images from MER via JPL pretty much as they arrive on Earth. A bit quicker than Google's pipeline, I think? Data from Cassini at Saturn (about to start a fast twin-flyby series of Titan encounters), the utterly awesome 25cm-resolution HiRISE camera on Mars Reconnaissance Orbiter, the three (? I think it is, now) lunar orbiters, including Kaguya with it's Hi Def video output,... et cetera, et cetera. There are also several really good fora where people build amazing image products from the raws - 3D anaglyphs, panoramas, pulling out detail too faint to have been seen in Voyager data at the time, writing stonking software like the Midnight Mars Browser, theorising the cryogeology of Titan from radar ,... oops, I got started didn't I :)
...speaking of HiRise, which as you say is utterly awesome, they managed to get a picture of Deimos with it, which is today's Astronomy Picture of the Day:
http://antwrp.gsfc.nasa.gov/apod/astropix.html
That must have been a fairly impressive bit of manouvering to get the MRO's camera pointed in the right direction at the right time; from orbit, Deimos' motion across the sky must be pretty rapid...
@ Van Becelaere: you are aware, aren't you, that Dejah Thoris is actually some kind of egg-laying marsupial and not a human at all?