Joel Madden stepped out onto the field at Dodger Stadium for the Hollywood Stars Celebrity Softball game on Saturday. At the event he revealed he's working on a memoir centered around his relationships and his family life. Between Nicole Richie, his ex-girlfriend Hilary Duff and touring the world with Good Charlotte, Joel's bound to have a few good stories. Plus, if he needs any tips, Nicole's already an accomplished author. Tell us — would you be interested in reading his memoir?