My partial cast for The Pericles Commission is on his blog: My Book, The Movie.
It will make more sense if you've read the book. If you have, I'd be fascinated to know your own cast list.
SPOILER ALERT: Discussion of casting inevitably runs the risk of spoilers, if only because it requires listing characters and their relationships. People sensitive to spoilers who haven't read the book yet should not read the comments to this post!
(...and to those making comments, please be sensitive to the problem. Thanks!)