Proof that doing good can transcend little things like divorce and scandal: Jennifer Aniston and ex-hubby Brad Pitt are both serving on the honorary advisory board of the Epidermolysis Bullosa Medical Research Foundation, which Courteney Cox Arquette and David Arquette spearheaded. The foundation is hoping to raise $1 million in two weeks to help children stricken with the rare, debilitating skin condition. "EB is very personal to me so I'm happy to be a part of this $1 million challenge," Courteney said in a statement. "Now is such an important time to put the spotlight on EB and ensure that research can continue at a fast pace." Other celebs on board are Gwen Stefani and Gavin Rossdale, Orlando Bloom, Kate Beckinsale and Eva Longoria Parker.