Slides from the GDC course are available in PowerPoint format on NVIDIA's web site in the Developer section. Please note that the "Multitexture Combiners" presentation is obsolete, as the extension described therein has been superceded by EXT_texture_env_combine.
Some of the material presented was borrowed from the 1997 SIGGRAPH course, Programming with OpenGL: Advanced Techniques. Course notes and example programs from the SIGGRAPH course may be found here.
Additional example code from the course will be available soon.