That Metagross art is just great, aside from the fact that it'd back legs don't appear to have the "toes". Ah well, it's most likely just the perspective, but it sure looks weird to me. Whatever. I don't really like the Dragonair, though. It just has too many colors, and is overall to busy. Quaza and Jolteon are alright, but not the best. =/
That's all for my pointless comments on official artwork.