I do have to say that the books are a sort of guilty pleasure. Quite frankly, all of the characters are terrible people. Frighteningly, the one whom I absolutely enjoy the most is the crippled torturer, Glokta. He is a member of this fantasy world's Inquisition who takes no real pleasure in his job, but who also has no qualms about doing truly awful things to get the results that he wants. Still, like Tyrion from The Song of Fire and Ice (commonly known as The Game of Thrones), there is something compellingly honest about his character that had me looking forward to his passages in the books and rooting for him to succeed more than any of the other characters.
I'm also quite impressed with how complete this trilogy stands. Elements that are revealed in the third book have their hints in the first. While I was able to guess a few of the mysteries before they were revealed, there were some that caught me quite by surprise, and others that have been pleasantly (instead of frustratingly) left unresolved.
In short, I look forward to delving into this world again.