I have some Newbery observations over at Cyn's blog.
One of the fun things about the N is that every year it leads to rank speculation on "what the committee is looking for," which in some ways is rather like counting angels on the head of a pin :-).
That said, I have noticed another trend: A mouse book (Mrs. Frisby) won in 1972 and a mouse book (Despereaux) won in 2004. Therefore, in 2036, a mouse book ...