#5 has two favorite books these days. This one he reads all.the.time. I love it, even if I roll my eyes at the hundredth reading of the day. If he forgets a word(picture) he asks then says "oh, yeah that's right." in that tone that makes you think he was just testing you to see if you knew what you were talking about.
Just makes me smile!
His second favorite is an I spy numbers board book. He loves looking for all the hidden objects. We have several of this type in the house, the younger two really like these. #4 will generally pick this type of book over most choices(although airplane and firefighter books rank pretty high on his book wishlist too).
We are a houseful of book lovers here:)