Delightful

Is the only way to describe this fantastic Vulture interview with Up director Peter Doctor.  It's just incredibly smart, from the discussion of how to use the screen as a framing device make the 3D undistracting, to how they worked on character backgrounds for people who were just in the frame, to how they put together that amazingly touching opening sequence.  I thought this was particularly great:
The one thing critics tend to fault Pixar films for is that — though they always have these un-Hollywood setups — they always end with a conventional chase scene. Will Pixar ever end a film without one of those?
Yeah, it's definitely something you think about: "This time, we want to make sure we don't fall into these habits that we do." But just from a storytelling standpoint, you want to have a sense of acceleration, that things are getting faster and deeper and more intense, so that's why you inevitably get to some physical thing, which really viscerally gets the audience going. But it's always something that we're aware of. And it's always frustrating when there's a couple of things in this film where you go, "Ugh, I wish we could have found a better answer than this." But you just try to make it as good as you can.