The character of Dexter, a disassociated, psychopathic serial killer, is somewhat reminiscent of Data, the android in the Star Trek series. Dexter is devoid of normal, human emotion, and has to learn behaviors by rote. Seeing the world through his eyes enables us to closely examine what is "right" and what is "wrong." We have to pause and wonder about our own perception of reality.
Overall, the show is a side-splitting outlet for the vigilante/serial killer/dysfunctional being in all of us. Well done!