In a word, everything:
"You want to be categorized in a league of your own, like Randy (Couture) is," he said. "You don't want to be in the mix with everybody else. When they talk about you, you want them to say something special, like a Joe Frazier or (Muhammad) Ali, those kinds of people. You want to be extraordinary. You want to shoot for greatness and I think every fighter should."
While I'm usually wary of fighters who want to run before they walk, BJ's talent plus 2006 and 2007 setbacks seem to be the engine of his desire to achieve more. After coasting by for years at the top on talent alone, BJ developed very poor habits that wound up costing up, most notably in the loss to Georges St. Pierre.
For Penn to win next week would be the motivation he needs to keep going. Owning a title and having to defend that title would be what a competitor like Penn requires to stay sharp. Here's to that happening.