The shoe on the roof by Will Fergusson

Thomas Rosanoff, a brain-research grad student, is dumped by Amy and is shattered. He decides to kidnap and heal her mentally ill brother who believes he is Christ. When Thomas runs into two more men who make the same claim he decides to fix them all. If successful, he will win back Amy and make a name for himself. This hilarious book also questions the nature of faith, love and reality. I loved Thomas with all of his ups downs and foibles.