I heard Mark Hamill's been doing a lot of voice actor work for video games and such lately....I got that from the Toronto Star, when they were talking about Child/Young stars (specifically, if Ashton Kutcher was screwed), which Mark was one of, so that's what it said.
I liked the book, but I don't think the casting choices for the main characters are that really good...
Orlando Bloom and Brad Pitt?
COME ON! IT'S A FRICKIN TEENYBOPPER FEST!
But it's the only way to get money, because most people don't care about Greek history..