Stardust by Neil Gaiman. The movie just came out, and I began the book this morning. I hope I can finish it by tonight (unlikely). So far it's amazing. The writing style is intoxicating, and the beginning reminds me of Goblin's Market by Christina Georgina Rossetti.
And I really liked The Kite Runner. It was a bit disturbing (those of you who read it all know what I'm talking about), but still VERY well structured. We analyzed it in class, and how it's an alteration of the classic Hero's Journey. The writing, of course, is nice and flowing, and the characters are very real.