Eric Holder - See here and here for statements from victims of the people he thought should be pardoned.
This is not related to a reasonable judgment call. As Deputy Attorney General at the Department of Justice, he exercised considerable discretion over how to handle controversial decisions. And, as the testimonies above demonstrate, he failed miserably in that job. He was a lackey for the basest political maneuverings of the Clinton team. In short, he assisted in the shameful sale of justice to the highest bidder - such as Marc Rich (so aptly named).
In the case of the FALN, he pushed for the pardon that would assist the election of Hillary Clinton to the Senate.
I started to pull this together, then read And Rightly So!, who has a post that nails my concerns.
SO much more efficient!