The Rock.
He came up the son of a former wrestler, got into the WWF at a good time (when WWF was falling to WCW in ratings), and took off like a rocket. He accomplished stardom so quickly within both the wrestling community to the general public. Steve Austin was greatly known but not respected. Hulk Hogan is the greatest wrestler (in terms of making the sport large) but he isn't looked upon that greatly by the public. The Rock on the other hand ... well people look at him as more than a wrestler.
He is looked upon as a handsome, talented, and charasmatic individual. He wrestled for years, enjoying it all, became pretty famous, and then decided to take his talent else where and earn a name for himself in Hollywood instead of sticking with wrestling until he is 40, still trying to gain the fame he once had. He also did it before his body became severly injured like most of these older guys (Steve Austin, Hulk Hogan, HBK).
I think Rock was smart in doing what he did. Wrestling sort of lost popularity about the time Rock was getting out so it was a great time to leave. The guy is so talented in other fields; he is funny, charasmatic, plays guitar and is pretty good, and he is a decent action star actor.
He accomplished about as much as anyone can in the field of wrestling and took his fame from the WWF/WWE into other fields where he now is becoming more and more succesful every year.
I think that's a better career than say Hulk Hogan, who is now 50 or so years old, has a very battered and surgically repaired body, and never really did anything with his fame other than make a few dumb movies.