Really, really exciting. Brandon Sanderson is pretty much the master of the last-minute completely-unforeseeable twist. I want to start The Well of Ascension, but since I have a queue of about twenty books on the bookshelf by my bed, I can't decide if I want to just bump the whole series up to the front or wait and merge them into the list. 
 Anyway. I'll be honest, even while I was finding it really interesting, I wasn't completely hooked until fairly close to the end. In fact, for most of the book I was wondering why I wasn't feeling more invested, because of course the story is well done, and I really liked the characters. Maybe it was because of the unbelievably irritating way BS has of starting sentences with conjunctions--which doesn't bother me--and following them with a comma--which does. Literally two or three times in a paragraph, he'll say things like: 
 "Yet, he had to be stronger than he looked." 
 "Yet, no one stopped them as they passed through the room." 
 "But, there's more." 
 "But, not like you and me, right?" 
 I can't remember if he did this in Elantris, but I have to admit, I'm not looking forward to more of it in the next two books. I hope The Way of Kings isn't the same... It's just such an irritating thing to have to force myself to ignore every few sentences. 
 Yes, that's my only real complaint; the book is pretty fantastic otherwise. I love that Brandon Sanderson is such a competent fantasy writer. His style is totally accessible, and he's much easier to read than a lot of other fantasy writers. If you're thinking about exploring this genre, Sanderson is a great place to start.