On the Google Mars site they use Viking data for visible light maps and Mars Odyssey IR data for infrared maps... It would be great if they added Mars Global Surveyor images into it, but the high resolution images by MGS tend to suffer from the lack of context.

I don't quite understand what you mean by "strips of the moon" -- the map used on the Google Moon map is an airbrushed map by USGS. Hopefully they replace it with Clementine and Lunar Orbiter data. The current map is more like a joke (try zooming all the way down).

The Google Earth release will be eventually added into the Google Maps site, by the way.

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Science is a way of trying not to fool yourself. The first principle is that you must not fool yourself, and you are the easiest person to fool.
-- Richard Feynman