What book have you reread the most times?

I am going to confess that this is a book I reread almost yearly. It reminds me of my youth, I think. I still wonder about Neal Klugman and Brenda Patinkin. Wonder whether Neal ever left his perch at the library and went onto a more fulfilling profession. Did Brenda settle for a life like her mother had in Short Hills, a privileged if not terribly fulfilling future? I think that these characters remain with me is due to the incredibly faithful movie version with Richard Benjamin and Ali MacGraw, who perfectly captured the characters. Also Roth is a very good writer and this may be his most accessible, lovable book.

What book have you reread most? Was it a book that spoke to you in your youth?