Lane Smith usually works with Jon Scieszka, but he has now written a book on the Founding Fathers--as kids--called John, Paul, George and Ben. Yes, it is as funny as the rest of his books.

Kristen Kladstrup's The Book of Story Beginnings, is a wonderful new fantasy in which a boy reappears a hundred years after rowing off to sea in 1914--from Iowa!

For nonfiction readers, there is Chew on This: Everything You Don't Want to Know about Fast Food, by Eric Schlosser & Charles Wilson.
It's the kids' version of Fast Food Nation.