The RTP Product Development Guild, working the Rob Connelly at Fineline Prototyping; has released a five part video series on rapid prototyping. It is a great way to learn about the science and art of rapid prototyping. Much thanks to Jaime Vodvarka (Guild Intern) for putting this together. Please note that there are five parts to the video. The Youtube video screen has an interface at the bottom that allows you to select which part you would like to watch.