These were from the Lighting and Rendering with Mental Ray course I went on last year. The course ran by Jeremy Birn (Lighting Artist, Pixar) was great for further study in to lighting/rendering with 3d packages (Maya used for these). I'm continuing studies in lighting by doing the 3D Lighting Challenges found here
I'd recommend the course for anyone interested in Lighting or Rendering, the basic techniques can be used in any package really and it teaches how to use lights well and more importantly efficiently (getting good results without necessarily the need for advanced rendering options like Global Illumination).
Lighting Studies '09
