[peatfreak]

I'm really curious as to how these were done, or might plausibly have been done. Is this indicated anywhere? After working on audio signal processing for quite a few years, I'm investigating image and video rendering, and applications like this are the kind of thing I'm interested in.

[Animats]

Any good 3D modeling and rendering system could do those images. Blender, Maya, etc.

The house-sized ones you could build for the better virtual worlds, such as Second Life.