The organizers of SIGGRAPH Courses often put up web pages dedicated to the course.  These typically have the latest version of the course notes and the slides.  I’ve found a bunch of SIGGRAPH 2009 course pages, and thought it would be convenient to have them all in one place:

• Advances in Real-Time Rendering in 3D Graphics and Games
• Beyond Programmable Shading
• Real-Time Global Illumination for Dynamic Scenes
• Efficient Substitutes for Subdivision Surfaces
• Scattering
• Advanced Illumination Techniques for GPU Volume Raycasting
• Next Billion Cameras
• Build Your Own 3D Scanner: Optical Triangulation for Beginners
• Computation and Cultural Heritage: Fundamentals and Applications
• Interactive Sound Rendering
  

SIGGRAPH courses are a consistently good source of information – if any of these courses are about a topic which interests you, you might want to take the time to read the course notes and slides.