There's a great filmed conversation/co-interview between JK Rowling and Dan Radcliffe on the extras disk of the last H Potter film. One of the funny things Jo says is about Neville in the movies: "you cast this plain-looking kid, and then he grows up to become this sort of Rock God..."
Somehow they managed in the movie to make him still look pretty much like Neville though. And admittedly he is one of those chameleonic people who look very different from picture to picture.
Anyway, how lucky were these people with the three main actors? To find three kids who not only are perfect for the roles, but keep being so, and all stay around and does great work through eight movies? Amazing. And does it through the great pressure of both adolescence and stardom. Huh.
Harry Potter really is an amazing phenomenon. Not only the sheer unprecedented size of it, but also the character. It's really, I think, the only thing of the kind I really like (not that I'm a huge fan, but I like it). Take Narnia or that Compass thing for example, they just don't really interest me at all. There's something about Harry Potter which makes it more trans-gender in some way. Maybe it is a certain extra foundation in logic, which matters more to the traditionally left-brained men than to women, for better or worse. JK actually talks a little about that in the interview. Not to be accused of being sexist, I think that taking a lot of stock in logic is as much of a weakness as it is a strength, since it tends to block intuition to some degree (hence the concept of Female Intuition), and of course any person of any gender can lean any way on this matter.
Re the scale, I just saw that the HP movies are the highest grossing film franchise of all time. That's astonishing, considering Star Wars and everything. I'd not imagined that. Especially with Star Wars, which has so many hard core fans who have seen each movie dozens and dozens of times.
Talking about Good Job Growing Up: