Great interview with CK and Jessie Buckley over at Esquire.

Buckley: I probably watched Eternal Sunshine of The Spotless Mind when I was at college. And I remember going to see Anomalisa and realising that Charlie was pretty brilliant. That was my meeting of him… in my mind. And I didn’t expect it to go anywhere beyond that. And then I flew home [from America to Ireland] for Christmas about three years ago and my agent sent through the script. And then the Charlie in my mind became the Charlie on the piece of paper in front of me. And then I sent in the audition tape. But with those things, it’s kind of a shot in the dark.

Kaufman: It’s funny, you know, because I was really worried that you weren’t going to do it.

Buckley: What?

Kaufman: Yeah. Because you were the person I wanted for the role. I couldn’t really see anybody else in it after watching you do the tape and also after watching Beast. Because there’s so much transformation in that character in Beast. We talked about this early on: this idea of the young woman in this movie switching really fast from one thing to another because she’s constantly being projected onto, and I saw that you were the person to do that. So, it’s funny to hear that you wanted to do it. I didn’t know you wanted to do it.

Buckley: Oh my God, completely. I wanted to do it so bad!

[...]

Esquire: What’s it like to get a Charlie Kaufman script, Jessie?

Buckley: Yeah, you don’t get those [too often]. You don’t get challenged like that very often. And when they come, it’s like being electrocuted. In the best way. Not… to death. It’s so exciting. You feel like you can think completely differently. It’s what you want, really. But it’s very, very, very, very rare. Its happened maybe twice to me. (Source)

And also this:

Buckley: I learned that Charlie is incredibly good at scooters.

Kaufman: That’s what I would do for relaxation between takes. I would ride around on scooters. I think scooters are cool.