While writing my post in the Greatest Match finals thread, I talked about how Bret Hart is the greatest ring psychologist ever in the WWE, and Stone Cold is definitely up among the greats in that area as well. Who else would you point to in WWE history as being particularly adept in this area?
You gotta throw a nod to Owen Hart for this, of course, for many of the same reasons as Bret.
Eddie Guerrero certainly deserves some props. While I don't think he's on the same level as Bret/owen/Austin in this area, he really knew how to play a character in the ring and to make all of his actions fit with the narrative of his character/feud/storyline.
Who else?