Paris Hilton went to jail; Scooter walks (scoots?). He can thank the 'Scooter commuter'. Or perhaps the mysterious inhabitant of the fourth branch.
Readings looking for irony may find it chez Atrios (“Inevitably, the subject of Marc Rich comes up every time presidential pardons come up. Without going into all of the issues, can we just remind the world that… Marc Rich's lawyer was Scooter Libby.”) and also at Is That Legal?, which tells the instructive tale of Wilbert Lawrence.
Myself, I'm not looking for irony. Democratic spines would be nice.