Our textbook comes with PowerPoint slides to accompany the material, but my students pretty much groan when I put those up on the board, because many of them have been "PowerPointed" to death. I think PowerPoint is a wonderful graphic tool, but I am finding my students often take the attitude: "Oh, not another one!" I have found some of the videos on the OpenCourseware sites to be valuable (along with streaming video), but those are not available for all content areas. My students in oral communications are required to use a visual aid, and most of them choose PowerPoint. The 10/20/30 rule is a good one, and many of those general guidelines included within this module are also in their textbooks. Many students want to play with animations, without realizing how distracting that can be.