Just as Video Nasties and pornography helped home video take-up, kid’s books are going to really push innovation tablet-wise.
I remember loving being read to from more ornate picturey books - Ivor The Engine, Follow That Bus, The Night Before Christmas. These are warm and pleasant childhood memories which I have little doubt will be doubly replicated by the insane possibilities of these interactive creations.
Another reason, BTW, that the hardware we use to access this content has to be beautifully crafted too. I don’t really want to be reading to my kids on something designed like a giant DS to be honest.