So far the casting is great and it seems like all the actors have a solid grasp of the source material. Lan and Moiraine stand out in particular.
I'm only on the second episode so I can't say much more but from the dialogue and portrayal of the Two Rivers village to the climactic battle scene in the first episode I'm pretty sold so far.
I got some complaints about the adaptation, but overall, its seems solid.
Honestly, one of my favorite things is that its actually colorful; I'm soooo over sepia or grey moody fantasy, where everything looks so grim and lifeless. It has the drawback of giving you a clearer look at the trollocs, making them look a little cheaper and less intimidating, but I'll take it in exchange for having colors and generally well lit scenes.
I liked that too and I thought the trollocs still looked really great.