I am reading the Hypnobirthing book by Mongan, because I am taking that class right now (it's kind of early, but I couldn't take it later on due to scheduling conflicts with DH). I'm still debating whether to get the Hypnobabies home class materials as well and do that on my own, since there are no classes offered locally.
I skimmed through the Bradly Way book, and a Prenatal Fitness book, and the Baby Bargains book (the most useless of the 3, IMO) that my sister passed on to me.
Every week I read a little bit out of the Mayo Clinic pregnancy book, What to Expect When You're Expecting, and Pregnancy Week by Week out loud with DH.
I haven't started into the newborn care/parenting books yet. My sis gave me a copy of The Happiest Baby on the Block, but there's not much info there. I'll start reading more of those types of books in a month or two, when DH is traveling and I'll have more free time.
DH is reading the Hypnobirthing book on his own while we are taking the class. He hasn't read any other pregnancy books by himself. He usually just listens to what I read to him each week from those books I mentioned above.
What have your husbands/partners read so far?