Leonel Moura (born on December 26, 1948 in Lisbon, Portugal) is a conceptual artist whose work shifted in the late 1990s from photo based work to Artificial Intelligence and Robotic art. Since then he has produced several Painting Robots and the Robotarium, a zoo for robots. RAP (Robotic Action Painter) (2006) is a robot that makes drawings based on emergence and stigmergy, decides when the work is ready, and signs it, is displayed as a permanent installation at the American Museum of Natural History in New York. (from Wikipedia)