Keeping the cat front-and-center was definitely a smart choice, from Tim and the animation department. Mr. Whiskers got referred to more than we actually saw him on stage. Seeing him on screen, you just love him.

I often say that a lot of my job, as a screenwriter, is sort of being a stock picker, in that I need to figure out what movies are probably going to get made because otherwise I'm spending a lot of my time on something that's trapped in 12-point courier. So, having Tim's interest in doing a movie is a huge asset. But, not everything shoots. I'm always grateful when those things do happen.

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.

Frankenweenie is also about mortality, but at a very different stage. It's losing a parent versus losing a dog. I don't run away from the tears of that, which I think is what makes it feel universal.

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 just always remember myself as the teenager with questions about movies and screenwriting. I would hope that there was somebody out there who would answer those questions, and so, if I can take a few minutes to do it, I will. It's not threatening for us. We're not being stalked, so it's easier.

With Corpse Bride, I saw a lot more of it during the process because we were changing things a lot. When I came onto Corpse Bride, it wasn't a musical.