Volte-face (QuickTime) [Reynald Drouhin]

Volte-face represents one type of videomosaic: each frame of the video clip is composed of smaller images within a grid that come together to resemble a larger image. Here, two rotating faces and heads are represented using a mosaic of clouds. See Nuages-Visages for photos and information on an installation version of Volte-face.

[....] It's a deliciously fitting representation of watching clouds float by and seeing fleeting, formless faces among them.

Check out Reynald Drouhin's works. You can see his other videomosaics as well as web-based mosaics such as Des Frags and Timescape.