Never being mainstream, Genetic Programming (GP) has though interesting applications in various fields, like financial mathematics, process control, signal processing and computer graphics, among other things. I noticed a short hype in the early 90s, but GP soon became a valid and reliable tool. I remember a big plate of GP-built graphics programmed by Karl Sims hanging on a wall at one of my former employers. His website shows many of his works that are beautiful as well as scientifically interesting. For all of you who missed the basics (and for me as a reminder) the authors of A Field Guide to Genetic Programming (Riccardo Poli, Bill Langdon, Nic McPhee) provide a fine book about GP on their website: 200+ pages about Genetic Programming, pure information science and no-nonsense. For free. Simply great!