Goodnight Gorilla is currently Sam's favorite book. His favorite part is when the pages are completely black except for the animals saying "Goodnight" and he always laughs at the next page which is just of the open eyes of the zookeepers wife. He has been getting into books a lot more lately and it is fun to sit and read with him and see him get excited.
(I have a video of him reading the book but I couldn't get it to load for me. It kept getting stuck.)