TFIOS is more then famous and doesn't need yet another fantastic review but I thought I'd give it one anyway :) 
 The Fault in Our Stars is just fantastic. It doesn't have any epic world building, there's no huge conflict that the world needs saving from, our characters aren't even that interesting (they have no powers, no cool talents) Hazel mostly watches ANTM and Augustus plays video games in his basement. 
 What they do have is an epic love story, a tragedy, and of course a bitter sweet ending. Beautifully written and way to quotable to choose just one that's my favorite. I am so happy I choose TFIOS to kick off my John Green readathon this month! Bring on An Abundance of Katherines.