The Daily Grind: Which MMO has best realized its concept art?

I was looking at some Mortal Online concept art the other day and marveling at how beautiful it is. Then I looked at Mortal Online itself and was sorely disappointed. This is not to pick on Star Vault's game exclusively, though, because plenty of other MMOs have also failed to translate conceptual awesome into actual awesome.

Let's talk about the success stories, though. Which MMO do you think has done the best job of realizing the vision put forth by its concept art?

Every morning, the Massively bloggers probe the minds of their readers with deep, thought-provoking questions about that most serious of topics: massively online gaming. We crave your opinions, so grab your caffeinated beverage of choice and chime in on today's Daily Grind!