The Yale Law School career development office has an interesting breakdown of how to make your billable hour requirement.
Of course, there are jobs where billables don't come into play, but you might end up working with this guy.
"Federalist blogwench" -- Fenno
"[A] caricature of Goffmanian anxiety." -- M. Vanderwheel
"[R]ude, cruel, and shows a blatant lack of open-minded understanding." -- Twilighters Anonymous