To be cliched, this is the ultimate "you'll laugh, you'll cry" type of reading experience. What an unputdownable emotional roller coaster. 
 This book is ridiculously witty and clever, with prose and dialogue that is regularly laugh out funny and deeply insightful. When I started the book it almost seemed too clever to me, the level of verbal gymnastics seemed a bit forced, but ultimately the beauty of the language and the richness of the story makes these hyper literate, hyper articulate characters work. They still feel real and authentic. I was awed by how this book contained some very powerful, beautiful and resonant observations about life and mortality yet it also smartly punctured a lot of the false, feel good myths we tell ourselves to try to handle the horror and senselessness of death. 
 Given the subject matter it is not surprising that this book is also a tear jerker but the sentiment is earned. I teared up at at least half a dozen parts of this book and fully cried at the end. 
 I highly recommend this book because it deftly balanced comedic and dramatic elements and created vivid, engaging and loveable but not cloying characters. 
 Awesome.