While not rabid, I am a Star Wars fan. One of my favorite scenes in the whole motion picture series is one during the final epic battle between the Jedi (George Lucas' good guys) and the Sith (his evil ones) on volcanic planet where a young Obi-Wan Kenobi beats and disfigures Darth Vader in hand-to-hand combat, even after the Jedi have already lost the war.
The reason that it is my favorite scene is because in my opinion it deconstructs every distinction that Director Lucas has created between the Jedi and the Sith, good and evil. In the scene, Obi-Wan tells Darth, "Only a Sith deals in absolutes." Obi-Wan's telling itself is an absolute, which by implication makes him an evil Sith. I don't know whether Lucus' intention was to open up this aporia in the movie, but once it opened, there is no closing it. The line between good and evil is vague when everyone deals in absolutes, but some refuse to see it.
In the comments section of a previous post, I am contending with a highly intelligent economist who has challenged my moral theory that human action should be judged by some categorical (that is, absolute) imperatives. First, I maintain this primarily because all of us who make value-based judgments deal in categoricals (even the claim, "we should never or rarely use categoricals," is itself applied categorically or absolutely). It was unavoidable that Obi-Wan himself had to absolutize his judgment in order to condemn Darth Vader. He was wrong in distancing himself from his own categoricals.
Second, I argue that there are some categorical imperatives, because you have to hold a categorical imperative to believe that human rights are inalienable and that human nature is inviolable at a profound level. Even if the absolute claim that there are few if any universals or absolute ideals by which to judge human behavior were true, a life that may already be "nasty, brutish, and short" would be infinitely more horrible to contemplate as it is infinitely more horrible whenever it happens.
So, even if there are no categoricals (except the categorical that there are no categoricals), I have faith that human beings have to invent them just to bar all of the extraordinary and mundane inhumanities that can be unleashed upon one another.