Zoe Kazan On ‘What If,’ Daniel Radcliffe, ‘Harry Potter’

I thought this script was so funny and so good. It just seemed really relatable the situations these characters are in. Like a real love story. I thought, why not go work with Daniel Radcliffe for two months. I mean, lucky me.

I was a fan of the books, I haven't seen that many of the movies. My sister was a huge fan of the books, and she's a little younger than me. I sort of read them to relate to her and I just fell in love with the stories.

Yeah, Dan has his security measures, but it didn't effect the way the filming felt at all.

No, I don't make that many Harry Potter references in my real life so it wasn't like there was this uncontrollable urge.

Yeah, we talked about that a lot, that's definitely something we have in common. And he's so well respected in the New York theater community, so I heard a lot of great stories about him going into it.

This was a really fun job. I can't really think of anything that I would say was a challenge. There are things that are acting challenges like, to get to this emotional place. But everyday was fun on this job.

I'm in an HBO mini series called Olive Kitteridge that we shot last year that's coming out this fall.

The Apartment, by Billy Wilder. That's a great movie, with Jack Lemmon and Shirley MacLaine.