What is Hermione's big moment and big sequence in the sixth film?
WATSON: There's this mean girl called Lavender who has a bit of a crush on Ron. It's leaked in the beginning of the film that Hermione and Ron are finally going to get it together, and then she steps in. Hermione is sensitive and quite mean, really. And it's very much about how she sort of despises Lavender. Not really because she's taken Ron away, but because she's kind of the opposite of Hermione. So it's very comic and also quite sad for her. It's very Ron based, her part.

Do you think the fans of the book will find "Half-Blood Prince" to be a faithful adaptation?
WATSON: I hope so. I think we've stuck as close as we possibly can without making a ten-hour movie. We've never had that complaint before, and I personally am such a big fan of the books. I've read them each of them three or four times so I think that's a really good focus for us.

When you look back at the making of this film, what do you think you might remember from it?
WATSON: What really stuck out for me was Ron's Quidditch scene. It was so funny. Rupert's comic timing is just brilliant and he's so funny. There's this great scene where Hermione and Lavender are fighting over Ron, and we had a bit of fun with that. With Dumbledore's death scene it was absolutely freezing that night and it was a very sad scene, really.

What are the pros and the cons of having the same directors a couple times in a row versus having different directors coming in each time?
WATSON: It was a lot of fun having new directors because there was more energy and you knew there would be something new every time. But David [Yates] is a very good director and I think he's done a really good job with it. When you get to know someone you can trust them, and it gave him more a chance to try different things out.