I took my 10 yr old son to see it tonight.
I read the first book along with him and Dave hit the nail on the head about it being more juvenile fare.
For anyone who is expecting classic Greek mythology you will be greatly disappointed. However, it has been an uphill battle getting my son to read books with actual chapters, but he has gobbled these up ravenously.
The side benefit for me is that he is actually taking an interest in the traditional myths as well.
Ok, the film bears little resemblance to the plot in the book. Some key characters and elements are missing. The missing parts play key roles in the sequels so its as if they figured the movie would be a one shot.
The other thing that bugged me is that the boy playing Percy Jackson is considerably younger than the woman playing opposite him who is supposed to be the same age.
The effects are impressive and the characters are ok, but they never really develop well and the story seems rushed.
I predict he will watch this DVD over and over again, but I'm hoping the new Clash Of The Titans will prove more captivating.