Sharlene Lin (view her award-winning thesis film, Fishy Tale, here), from the Class of 2009, has created a series of video tutorials via DigitalTutors.com on texture using the software Mudbox that are now available for viewing online: "The goal of the tutorial is to demonstrate the use of color projections in Mudbox to make photorealistic textures."
You can find the videos here: http://www.digitaltutors.com