I've never read any other book by John Green, and I believe that's why I enjoyed The Fault in Our Stars. The characters are unique and funny, if not a bit over-the-top on some of their jokes. I added so many of the lines to my quote book (I'm a nerd), and I'll try not give too many more away by ending this review.
Read the book. Maybe you'll be like me, and think you're going to make it to the end without crying, but you will cry. And you will cry multiple times.