A Dynamic Shape Display that can render 3D content physically (2013)
tangible.media.mit.edu
tangible.media.mit.edu
Seriously though, I'm really impressed by the fluid motion. Even though the actuators are still sort of jerky, they are fluid enough to make this actually a viable technology. It's just too bad every design seems to have actuators that take up more space (in X/Y) than the part they are moving.