So far, I'm pretty impressed.
I can't say I really have a favorite character yet, since many portrayals will be different from those in the comic series; and there are still a lot more characters coming.
I forget Laurie Holden's character in the comic, but she(or her characters, rather) hasn't fared too well lately...(Silent Hill, The Mist...
I'm hoping her character in The Walking Dead 'makes it.' (Of course, I'm going to have to break out my comics again).
I can't really say much more since this I'm only the second episode, but I'm looking forward to seeing how the story unfolds...(Onscreen, that is).