Thrall is the Greatest Shaman to ever live,
Malfurion is the Greatest Druid,
Tirion Fordring is the Greatest Paladin,
Velen is the Greatest Priest... Ets
and perhaps their lesser equivelent on the oposite faction if one exists
E.G: Farseer Nobundo is the greatest Shaman of the Alliance.
I just though it may be an interesting topic, and if you are an RP'er it could be a way you could look up to one of them and try live up to the example set by said character if you are the same class.