This looks ridiculously good, and totally brings in tonnes of elements from the comics wonderfully. If the season does it as well as this trailer seems to then we're in for a treat. Plus, this makes me slightly less worried about the Governor being played by David Morrissey, and gives me excited chills at the Michonne appearance.
If you haven't seen the first two seasons of this incredible show, you must have been living under a rock. Bite the bullet and dive in. It's worth it.