Richard [Griffiths] was by my side during two of the most important moments of my career. In August 2000, before official production had even begun on Potter, we filmed a shot outside the Dursleys', which was my first ever shot as Harry. I was nervous and he made me feel at ease. Seven years later, we embarked on 'Equus' together. It was my first time doing a play but, terrified as I was, his encouragement, tutelage and humor made it a joy. In fact, any room he walked into was made twice as funny and twice as clever just by his presence.

I love Steve Carell and Will Ferrell - they're my heroes.

I think honesty is the most heroic quality one can aspire to.

The most wonderful thing I hear is people coming up and saying 'Thank you for my childhood', which still blows my mind but is very sweet.

In some ways, you get to find your voice better in [a sequel] because you have to define how you're doing it differently.

I definitely want to go on acting for as long as I can find employment. I'm never happier than when I'm on a film set. I just want to keep working.

Both of my parents have been actors; there were a lot of show tunes on in the car all of the time. I grew up with that.