For me personally, Anarchy Online was a truly great game, that was also literally the worst launch I've ever seen/been a part of. The character building, implant system, game world, music..it really did paint a convincing picture.
I can't think of any other MMO to date that has even come within 50% of AOs character building.
Funcom tends to have amazing ideas, and amazingly developed content, and quality of content (the quests in TSW for example), but they are usually truly horrible when it comes to technical delivery. TSW wasn't even in the same ballpark of badness that AO was technically, so maybe they are getting better.
Funcom is always worth a look, because you can always be assured there will be at least a few things that are truly great.