blender

I can give a tutorial or discussion on Blender, the free 3-D modelling and animation program. I focus on using it for animation and video, but it's also useful for making models for games, image processing, video editing, design concepts, etc. www.blender.org

I also have "Big Buck Bunny," their creative-commons licensed short film on DVD, and I could give a tour through the assets for that. Or we could just watch it and make copies.