My girls are obsessed with Percy Jackson, the teenage demi-god. That's the fictitious son of Poseidon in Rick Riordan's series of books, not some pop star. Actually, they're still of an age when they prefer his female chum Annabeth Chase, but boy are they hooked. Mind you, I'm not complaining. It's as good a way as any to learn about Greek mythology - they know everything: gods & goddesses, demi-gods and demi-goddesses, heroes & heroines, fawns & furies, the Roman equivalents, who's son or second-cousin-twice-removed of whom, who has what powers, and of course who's cool and who isn't. And they genuinely prefer the books to the follow-up films. Me? I know who Zeus is and that's about it.