Considering that the term "do-gooder" is generally used in contempt, just what is the difference between a "do-gooder" and a "good doer?"

In the Batman comics, the Joker is evil. He enjoys making people suffer. It is often the suffering as much as the material rewards that gives him pleasure. In real life, We all knew kids like that in school. But as we look at the suffering around the world in this century, very little of it seems to be done for pure joy of seeing people suffer.

Since Saw VI is coming out this October, I wanted to see how many of you have watched the franchise/ or have heard about it.

For those of you who have seen at least the first 3 parts, what do you think about John, AKA Jigsaw? What do you think of his "work"?