Obama offers Rahm Emanuel Chief Of Staff:

Emanuel, a knowledgeable source tells ABC News, has not yet given his answer. The sharp-tongued, sharp-elbowed, keenly intelligent veteran of the Clinton White House is said to have ambitions to some day be Speaker of the House. But he also has a keen sense of "duty."

That's some chief of staff. I think even Rahm's friends will acknowledge that he is as abrasive as Obama is smooth, and, well, he knows how to be a total asshole when he has to be. But that's often what you want in a chief of staff: an enforcer. Marc has more on the transition.