Chris Orr puts his finger on the studio's secret to success: "constant revision and incremental perfectionism":
It's a luxury unique to animation, though one of which few animators take comparable advantage. Live-action filmmakers are essentially slaves to a shooting schedule. They go in with a script, storyboards, etc., and come out, several weeks or a few months later, with the footage they will assemble into a motion picture. Once the sets are broken down and the cast-members scatter to their subsequent projects, that's pretty much that, barring a relatively rare, extremely costly re-shoot. Any subsequent "eurekas!" on the part of the filmmakers are likely to be unrealized.
He also reviews the latest Toy Story and flirts with the future of the cineplex.
(Video hat tip: TDW)