The producers and I first talked about the Big Fish musical, right before we did the first test screening of the movie. I said, "I think there's a Broadway musical here." And really, from that day, we started figuring out how we would do it.

I've always written towards movies that take place across two worlds. Most of the movies that I've worked on take place in two worlds, or sometimes three worlds, where you have a normal world and a fantasy world that mix and overlap. I never shy away from the series stuff in the real world. Big Fish is about mortality.

I counted it up once. I think I have written 45 full screenplays. Of those, maybe 15 have been shot, in some form. That's a pretty good track record, but it's not 100%. It is frustrating that, as a screenwriter, I've seen all those movies and they don't exist in the real world. They're juts inside my head and on those pages.

Preacher is a great frustration because I thought it was done, and then it got put in the press notes for the [Frankenweenie] junket and everyone started asking about it again. Preacher could be filmed, at any point. It's sort of ready to go, but it's lacking a green light. At some point, that green light might come, but it may never come. So, I have to allow for the fact that I've done everything I can, and whatever happens with it, happens with it.

You're looking, moment by moment and scene by scene, how you can tell the most interesting story. So, we had this great short and we knew that we had a story about a boy and his dog. Because we had that pure emotional core, we could go on crazy tangents and always come back to Victor and Sparky. When I wrote in stuff like Weird Girl and the cat poop, Dutch Day and the windmill, it felt like it was part of Tim's universe.

When Tim asked me to do Frankenweenie, he had his original sketches from before he did the short, of what Sparky looked like, and he drew Victor and some of the other crucial people. The remarkable thing about working with Tim is that, once he's read a script, he sketches out everybody else.

I convinced Tim to add one song, and then we added five. We changed a lot of things while we were shooting, which you should never do in stop-motion animation. With this, it was a much smoother ship, so I wasn't getting sent the scratch reels of things.