This is one of the greatest series I have ever watched. The characters are portrayed flawlessly, and if the viewer likes or loves one of them, he has still been exposed to his dark side. If the darkness prevails, the reasoning behind the seeming evil is explained, thus exposing the good side of the villain. One outstanding example of this would be the character Chen. There is hardly a topic under the sun that isn't explored in this series, from parenting to governing. Have snacks on hand, because once you have immersed yourself in this series, you won't want to tear yourself away to make a sandwich.