Twitter is the limit of me putting myself out there.

Having done television, I was used to either being aware whether I got the part within the same day, or within two, three days max.

I think screenwriter Steve Kloves does such a difficult job. And he does a bloody brilliant job, too. Transferring these Harry Potter books into films and making them coherent is one thing. But making them entertaining, as well, is quite another... He does a tremendous job, and he gets a lot of stick. And it's really unfair sometimes, and I challenge anyone else to do the job he does.

At least I like to keep it the same. That's why I've got all the same friends. That's why I go back to Leeds as much as possible. I don't know if you know much about England, but Yorkshire is a very sobering place. In the North. It's very gritty. Old mining villages. And people don't really care about celebrities up there. And it's great. And that's why I get back there whenever I can. 'Cause it keeps me very grounded, and it keeps my life very normal, whatever that is.

The reason I feel bad for Steve Kloves is because he doesn't enjoy cutting things out. He's not sitting there with scissors, just laughing maniacally, going, "Ahahaha." He doesn't like doing it. The stories mean so much to him. But it had to go. And David kept saying, "We're gonna try, we're gonna try, we're gonna try" all the way into the shoot until the very last days, when he said, "Sorry, it's just not gonna work."

What I've found is that stage is very much a foundation of acting. It's where it all began and you're working with that repetition.

I love making people laugh, and to be able to be that humorous character was great. And I actually was very similar to Neville Longbottom. I was very shy and chubby-cheeked. I wasn't bullied at school, but I wasn't particularly outgoing. We were similar. And so I loved playing him.