Not to deviate too far off topic, but... there is no chance that Dexter Morgan is Chaotic Evil.
I would place him as Lawful Evil.
I can even accept Neutral Evil, but you will have to give a pretty convincing argument to get me to buy into Chaotic Evil.
If Dexter is anything, he is absolutely methodical.
His "Dark Passenger" may have Chaotic impulses, but do to a life long (almost religious) adherence to the "Harry Code", Dexter lives a completely regimented life.
He even calculates out all of his minor interpersonal interactions, so that he can appear normal.
...and if you have not read the Jeff Lindsay novels that the show is based on, you should.
They do a much better job of conveying Dexter's "otherness". I feel that the show makes him too sympathetic.