My dad had a commercial film company so he had a videotape player before anyone. So he got Mel Brooks movies or Citizen Kane or some classic old movies. And every summer the revival house in Evanston would show the great films from the '50s and '60s and '70s.

Working with my dad was such a gas. We approached the work in a similar way. We only made two films together when I was an adult Tucker and Blown Away but it was so much fun to play with your parent like that.

Now that I've got some films under my belt I have the courage of my convictions regarding acting. It gives me a leg to stand on.

I've done four other films since 'Submarine ' so that's quite cool. It's just good to have people respect your work I've never had that before. Yeah my life has changed crazy. I'm a kid from a small town in south Wales I play my Xbox usually and all that sort of stuff and it's a whole new world.

My role in 'Legally Blonde' was really rewarding because I had so much fun working on the movie. I've had really rewarding experiences on tiny low budget films that you'll never see but where I had a cool time creating characters as well. I love almost all of the characters I've played.

The frustrating part of it is that you're generally known for what you did last. I've had the privilege of doing some very cool independent films that a lot of the time the general public doesn't see unless you're at a film festival or you're into that kind of movie.

Like I said about Freaked people tend to find these films and I think that in the end the cool thing about a movie is that it can be sort of burnt temporarily but then it's burnt into the fabric of your culture.

Films are really cool because every couple months or however many times you can get a job because there's a lot of luck involved in that you're playing a different character.

Period costume films are fun to discover but they're not relatable. It's more 'Wow that's cool - did it really look like that back then?' Whereas with a comedy you're like 'Yeah that's me that's my friends.' No matter what I want people to relate.

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.