I really like these. From a Flickr set titled: Metasystem Transition by Etherhill. There isn't any info about the artist or images other than the tags: apparatus assisted photography, generative, man-machine, stochastic, Autopoiesis.
This reminds me of aboriginal dot paintings (an Spirograph). Very cool.
I've always really liked photographically generated abstract images. The photograms of Man Ray and László Moholy-Nagy are favorites of mine.
Photgrams by László Moholy-Nagy