1Q84 by Haruki Murakami. I'm a huge Murakami fan, but this is my first time reading this one. I'm at around page 1000, and I wish it was even longer! I still have 200 pages to go but still, I was instantly immersed, it's the kind of world where you just dive deeper and deeper, the characters are mysterious yet endearing, and there is a lot of dialogue to puzzle over. The phrases the characters used are cryptic, and lend themselves to a lot of analysis and commentary. I also enjoy the journey through Tokyo, the nods to classical music, to different books, it is such a well created, incredibly detailed universe, truly fascinating.