Popfly is a very easy to use and yet powerful mashup tool for non-professional developers. It's really a lot of fun to use and lets amateurs create some really interesting combinations of data and displays.
Professor Mark Frydenberg of Bentley College teaches technology to business students. One of the things he does very effectively is to use technology to teach technology. This year he has added Popfly projects to the mix. Recently Bob Familiar who is an architect evangelist for Microsoft interviewed Professor Frydenberg about how this all fits into the curriculum.