I think IABU, but he's read up to book 5, and I always told him if he read the book first he could see the film. Then I let him spend his xmas money on the boxset (Tesco £20 for eight films, bargain), and only then did I notice that five of them are a bloody 12 certificate. WWYD? He's seen the first three now, and seen Percy Jackson and stuff like that.