One example is this:
I have never seen kids so successfully engaged in a story time book which had them roaring with laughter.
The Dark was deliciously creepy and there was a wonderful discussion afterwards about how Klassen's art work really evoked those dark, scary feelings (but was really cute all at the same time).
While I'm at it, The Nest was the creepiest book I read last year. Another future purchase for the school library, because, after all kids just can't resist the scary stuff.
My most favourite discovery to date is this wonderful book The Mysterious Howling plus the others in this series named the Incorrigible Children of Ashton Place. It had the usual M.O., I was drawn to the book by the art. To my immense pleasure it was a Klassen illustrated book, written by Maryrose Wood. The art attracted me, the story kept me hooked (more on these later).