A lot of people wanted Saddam dead, but let's face it... does it makes the situation better? I think not... does it makes the hatred felling grow?... yes I think it does at least on some segment of the muslim world.
World situation is very delicate, and the way to go should be chosen carefully.
He had a trial, he did some pretty radical stuff?... hell yes, I think it was used to set some kind of example, a poster boy to put it in some way, but I think that the way he was executed was pretty medieval, the whole issue was bout human rights (and belive me, I can get pretty upset and crazy when someone does harm to others with lots of advantage) but the chair or lethal inyection cuold kill him too.
Power corrupts. Absolute power is kinda neat.