The Walking Cactus D. cactiformis
This species of Onychophora (or velvet worms), was named one of the top ten most interesting discoveries in nature for 2012. The armoured lobopodians had wormlike bodies and multiple pairs of legs. D. cactiformis is significant because it has segmented legs adding weight to the theory that arthropods evolved from lobopodian ancestors.
I also wanted to post this because of the short discussion we had two weeks ago concerning Onychophora and the theory that caterpillars could mate with other species.