I recognize that I may be biased here, but it always surprises me how good Final Fantasy XI actually looks. Sure, there are a lot of games out that look a lot better than it does, but the game came out in 2002 and it’s still visually pleasing. There are parts of it that look significantly better than City of Heroes, which came out a couple years later. That’s pretty impressive for a game designed to work on a PlayStation 2.
For every game that started looking pretty terrible as soon as it started showing its age (EverQuest, I’m looking in your direction) you have MMOs that have gotten older but are still remarkably good-looking, like Lord of the Rings Online. So what older MMO feels like it holds up remarkably well graphically, even when you’re comparing it to more recent releases? What are the titles that impress you years later by still looking nice?