In this featurette, Sendak discusses the initial response to the book and what he thinks about Spike Jonze's vision. Dave Eggers also pipes up a little about Sendak's involvement in the adaptation. Jonze talks about "his" version of the story and how important it was that Sendak approved.
"I've never seen a movie that looked or felt like this," Sendak says, "and it's his personal 'this.' And he's not afraid of himself. He's a real artist that lets it come through the work. So he's touched me very much. He has touched me very much."
There are also plenty of movie snippets and great behind-the-scenes stuff that you must see. Link courtesy of the fantastic and fantastical writer Jonathan Carroll.