Questions to ask birth parents, answers adoptees wish they had.....

We were just selected as adoptive parents, and it will be a closed adoption. The birth parents have asked us to come up with any questions we might want them to answer, and I would appreciate ANY suggestions. I have been reading the threads here, and plan to get a form from my GP about medical history for the birth parents to fill out. BUT what about other questions adopted children have as they grow up ? If you were adopted, what did you want to know about your birthparents or your background ? My list of questions asks about medical issues, ethnic background, and if they have anything they want the child to know about themselves or their decision..... Do you have any other ideas ?