How about no one? Why is it that these end of term pardons are all about a "get out of jail free card" and seldom about mitigating a perceived wrong from the judicial system. Now, one could probably argue the legitimacy of the Scooter Libby case on it's merits and justify a pardon, but the damage has already been done and he avoided the bulk of the penalty. I would also probably argue that, eventhough the charge he eventually went down on was bogus, he was probably complicit in the whole Plame affair (along with a host of others who escaped indictment).
Brett