in & inside

Go here and watch one or both of these short films. Won't take but 30 minutes of your time, and in the end you will've experienced something on the fringe of both storytelling and animation and you'll be happier for it.

If you need a second opinion, here's what a guy named Chung said, or possibly wrote:

Forget everything you’ve known about animation before this — and just watch with an open mind. This is filmmaking by someone inventing a new way to see, a film that breaks the boundaries between inner and outer experience.

He's an animator.