My family LOVES the Skippyjon Jones books. We read them all the time. The books tell the story of a the great sword-fighter, El Skippito (a kitten who thinks he's a Chihuahua) who battles banditos the world over! He has a huge imagination and is TONS of fun to read! Spanish is integrated in every book, but easy to read. I have found that every time I read the books, I slowly develop a Spanish accent! It's a lot of fun!
The website link below the picture is a GREAT website that has tons of ideas on how to use the book with children. Enjoy!