[wanderingmoose]

I would add that there are really challenging problems and continual technical development. And since each movie comes with its own new set of requirements, each one is a fresh slate of new, crazy problems. For me personally, I love the short iterative cycle between math and an output image.

[riotnrrd]

I worked on tools for artists and you're totally right. The fast iteration was so great; it felt more like good ol' fashioned stay-up-all-night hacking for the joy of it than anything else I've ever done professionally.