I'm not familiar with the books -- how many are there? I saw the film a few years back but didn't get on with it. Enjoyed this first episode a lot.
The books, I believe, were rated the third best series of (young adult?) books in the UK a little while back (though the author does not put them as young adult, adult, or any other categorization in that regard).
I imagine they will be a major series that professors in the future force youngsters to read who haven't read them previously.
I watched the series (with what Morrus said) in regards to liking it. I didn't find it very Harry Potter like to my own thoughts (the books probably fall closer in line I imagine).
I liked the intro and the music with it, but the show itself I found rather boring. Maybe it's just how I like things these days with their action and fast pacing...this was noticeably slower than that. To me it felt a lot like they were simply adding filler to it.
On the otherhand, it's sort of like those old hallmark mini-series, and in a way this is (I believe it will only be 8 episodes and probably all based off of the first book of the trilogy, so based on a book like most miniseries and around the same length as a particularly long miniseries). It can go more in depth to many areas which a shorter film can not, but does not (hopefully) deviate from the material as much as a full on 26 episode season would.
The actors are all top notch, I just found myself bored. During the first episode, after the first 15 minutes I started to wonder if anything much was going to happen during the episode....and...not much did really. A nice little revelation and some build up at the end, but not much movement. The second episode has had more movement on it, but still feels like a slow build.
I feel what they are doing is building slowly and then will have a hectic last one or two episodes where everything seems to occur at once.