I love everything about it! The writing is beautiful, the dragons are amazing, the characters are 3D and full of life. Paolini's world-building grows more and more incredible (in a good way) with every book that he writes. The plot, while it did confirm everything that I'd suspected for two books, was deep and complex and always interesting--even when it concerned Roran, of whom I am not a fan. That's how great this book is, that it can overcome little annoyances and still hit my favorites shelf with a baseball bat, knocking so much aside so it can claim its own place just shy of the top slot.
I just....I can't even describe how wonderful this book (and its series) is. It leaves me truly speechless.