My kids love it. I thought I was the coolest dad in the world when I got to be in a Bond film but 'Harry Potter' too? Well I think I qualify for a medal for exceptional parenting or something don't you?

When I first started acting I was about nine years old. I had never been to audition in my life and my agent sent me out. It was just a commercial for 'Harry Potter.' That was the first thing I ever went out for and I got the 'Harry Potter' commercial which was really cool but I didn't play Harry Potter.

Hats off to starting a franchise younger than we all did in 'Twilight' and keeping your cool. The 'Harry Potter' men and women had what a 10-year run?

And of course I've got kids of my own now and they love me being in the Harry Potter films. I'm now part of a phenomenon. You become incredibly cool to your kids and you get a young fan base. So you became the cool dad at school. You're suddenly hip.

I was in the bath at the time and my dad came running in and said 'Guess who they want to play Harry Potter!?' and I started to cry. It was probably the best moment of my life.

And I have exposed myself to art so that my work has something beyond just the usual potter.

As a kid I always loved serialized books. It's the reason why people love 'Harry Potter.' Serialization is amazing. It works in television. It works in film and it works in books. Especially when you're a young kid you get attached to these characters.

So Harry Potter came in and it is nice that I have kids of the right age. I took them to London and they walked around the set and met Harry Potter and that is thrilling.