Obama has named Illinois Congressman Rahm Emanuel as his Chief of Staff. I don't particularly like Rahm as he is a corporate Democrat, always willing to sell out progressives to moneyed interests (see Tim Mahoney, D-Fl) but he is a tough guy. As long as he is just carrying out Obama's plans and not making them I guess I can live with him. The Republicans are squawking about Rahm so that is a good sign.
Here's a roast from 2005 where Obama gets after Rahm. (The entire 2 hour thing is here if you care.)