I'm sometimes inspired to go back and read classic children's books that I somehow missed during my own youth - this is one of those times.
The 13 Clocks stars an evil duke who has stopped time and is holding a beautiful princess captive. He assigns impossible tasks to each prince who visits to win her hand. But an unusual suitor takes upon the challenge with help from a truly unique plot device, and they may be the ones to overcome the duke's hurdles - or perhaps, not. I won't give it away.
The story is begging to be read aloud - even just reading the book, you can internally hear the wonderful cadence of the language. I'm putting this book at the top of my school-aged read-aloud list.
Additionally, I'd like to note this is the kind of intelligent children's literature that sneaks in advanced vocabulary and adult ideas to stretch kids, cognitively. I was reminded of Lewis Carroll's "Alice's Adventures in Wonderland," a personal favorite for the same reason.