His focus is on pixel- and vertex-shader development for current and future graphics platforms. Christopher has contributed as an original member of the RenderMonkey development team and as a shader programmer for ATI's demos and screen savers. He has been published in Game Programming Gems 3 (2002, Charles River Media) and ShaderX (2002, Wordware). Christopher is a graduate of Boston University. David Pangerl David's addiction to computers and games started early in his life and the vision to create virtual worlds continues to be the strong force in his life. He was involved in the production of several games, including Crash, Casanova, Hitchcock, Hannibal and most recently Mistmare. His main interests are computer graphics, artificial intelligence and compilers. Craig Peeper