This excellent image compilation by Mike Malaska shows the planetary surfaces of Asteroid Itokawa, the Moon, Venus, Mars, Titan, and Earth. So our technology has been in the surface of five planetary bodies besides Earth. Well, not counting Eros (not originally a lander), Comet Tempel 1 (a 'crasher'), and Jupiter (not a surface to land). Why Earth is shown as an ocean? With a 71% global coverage this is the most common surface type of our planet.
Image Credits: Asteroid Itokawa [Hayabusa]: ISAS / JAXA / Gordan Ugarkovic , Moon [Apollo 17]: NASA, Venus [Venera 14]: IKI / Don Mitchell / Ted Stryk / Mike Malaska, Mars [Mars Exploration Rover Spirit]: NASA / JPL / Cornell / Mike Malaska, Titan [Cassini Huygens]: ESA / NASA / JPL / University of Arizona, Earth: Mike Malaska, Composition by Mike Malaska.