I am against capital punishment. However, I am all for Deathmatch Island. I believe that all of the violent criminals from around the world should be placed on their own island, where they can form Death Tribes and murder each other to their heart's content on their very own reality television channel. I am against the idea of trying to rehabilitate violent criminals. Even if you could, that will never bring back the people that they have taken from this world, and will rarely satisfy the victim's family.
Oh, and if that is too Roman, maybe we can at least have prison UFC-like matches? They can either beat themselves to death or at least within an inch of their lives.
As far as Saddam is concerned, I don't think he should be murdered. Just think of how cool it would be if there was a dictator museum where you could go and peer through a glass cage at actual live dictators. Could you imagine how cool it would be to peer in to the eyes of Hitler, Mussolini, Stalin, or even Fidel Castro?