So here's a pencil test of the sanctuary shot from Hunchback of Notre Dame. The background of the cathedral was animated first by Mike Merell in 3D. Then that wireframe footage was printed out onto paper frame by frame. I then animated the characters over the top on paper. This is before the final sound mix obviously, and if you listen you can clearly hear Gary Trousdale, one of the film's directors, yelling "Ahh, you can't get her now Frollo!"