Some of you may remember the Gallery of Computation, which was popular here a few years ago.

Processing is an open source programming language and environment for people who want to program images, animation, and interactions. It is used by students, artists, designers, researchers, and hobbyists for learning, prototyping, and production. It is created to teach fundamentals of computer programming within a visual context and to serve as a software sketchbook and professional production tool. Processing is developed by artists and designers as an alternative to proprietary software tools in the same domain.

If you liked Brian Eno's 77 Million Paintings, you might be interested in this software.

Processing 1.0 (BETA)