I picked up Ina May Gaskin's "Spiritual Midwifery" and "Guide to Childbirth" today. I know I won't need them for a while, but they were calling my name on the bookshelf. I need to pick up the Dr. Sears book. I've already got Susun Weed's "The Childbearing Year" and Aviva Jill Romm's "The Natural Pregnancy Book".
I've been collecting books since I started TTC, so I've got quite a few.