At Pixar, we do a million versions of the movie, and every one of them goes through their awkward teenage phase where it's terrible and doesn't make sense, and we just keep working on it.

The first 'Monsters, Inc.' represents starting at Pixar for me, I have a special place in my heart for it. So to be able to tell a story with those ideas is an honor.

Once you get into a feature, whether it's a sequel or an original one, you have to start all over again, and you're creating a world, creating new characters. You're also tracking emotions. You're trying to create emotion and create a character that you can fall in love with for two hours.

I think we make the movies, initially, with the one movie in mind. But we do love the characters, and so we kind of miss the characters when the movie is over. But I think what happens is, every now and then you realize there's more to tell, or an idea comes up.