I enjoyed the book "Where the Wild Things Are" tremendously when I was a child. It was one of those books that you ask to be read over, and over and over because it is so fun to hear.
The movie is about as "fun" and geared toward children as "Watership Down." If you grew up in a divorced household, or with a lot of childhood turmoil, this is NOT the movie for you unless you want to end up huddled in the corner slashing your wrists.
If you watch it I highly suggest that you do so with the sound OFF. Even Rifftracks couldn't make this movie less depressing.