Hmm. Runescape, City of Heroes, touched in a number of random MMOs I barely remember, FFXI (Which I still want to finish the story in), FFXIV obviously...AQWorlds, I suppose?

I've never been big on the grindfest idea of games, so I can't say that much in regards to FFXIV. It's certainly my favorite of the current MMOs I've touched, mostly because of the story and general fun, but I'll be honest, I'd hop right back into City of Heroes given half the chance.