Huygens images of Titan surface remind me of Venus from Venera 9-10
When I saw the first image of Titan's surface from Huygens, it reminded me of the ones of Venus taken by the Soviet landers Venera 9 and 10 in 1975:
http://www.russianspaceweb.com/venera75.html
And as I recall, the scientists back then were also surprised to see a landscape with rocks. They thought it would have all been worn down into sand dunes.
The same happened with Viking 1 in 1976, as I recall.