The artwork displayed at Square Enix's Tokyo Game Show booth in their Final Fantasy 25th Anniversary Gallery is beautiful. These photos do not do them justice, but it's they're the best I can do for you right now.
The work displayed ranges from cartoon-y to realistic, but there's not a bad one in the bunch. I want to buy all of them, but they're not for sale. I'm especially partial to the one from Final Fantasy IX. The over-buckled and over-laced Cloud is good for a laugh, too. And that Kefka one? Are you kidding?
Check out our gallery for a better look, and be sure to click the 'full resolution' link for the ones you dig.