Addy's new favorite books are "Dinosaur vs. Bedtime" by Bob Shea and "Curious George at the Zoo" by H A Ray. The former involves lots of "ROAR!" sound effects. The latter is the great trifecta of Curious George, chew toy, and touch-and-feel book.
Bob Shea also has a book called "Dinosaur vs. The Potty". Too bad we're not potty training yet...