Alternative video projection ideas

I'm exploring the idea of projection of a moving image onto mist, dust or fog, drawing attention to the illusion of cinema. This in turn would help create a space which viewers can navigate through and around, making the whole viewing process more of an experience.

Here are a couple of artworks I discovered which deal with projection onto impermanent surfaces:


Carsten Nicolai 'Fades' (2006) Installation in lightproof auditorium, video projection (16:9 ratio), mist, sound
the projected light hitting the mist particles create a light sculpture in three dimensional space.

Primal Source (video documentation) from haque d+r on Vimeo.
Primal Source (2008) is an outdoor interactive/performance installation. The piece is projected onto a large water/mist screen and responds to the sound waves produced by the audience.

The Liverpool Culture Company 'City of Light' (2005) video projection onto water
This also utilizes the large outdoor water screen and coloured laser lights, creating a 30 minture video.