I totally remember Argent Dawn!! Dang now I'm being taken back. I think most of my best RP experiences were on that one.

There was a PvP server that was sort of an unofficial RP server. I forget it's name... I think it had "silver" in the title. It was PvP but RPers were regularly finding each other and having fun. I remember getting on a boat with a dwarf and he just breaks out in an IC conversation with me.