B plan
A birth plan is a document you give to your Dr. and everyone at the hospital to explain exactly how you want your birth to go. It is important to have when they ignore your wishes and you want a document so you feel really justified when you go bonkers on them after.
Seriously, it can really help you to clarify your thinking about what you want and raise questions you hadn't considered. babycenter.com has one you can download or do on-line.