I just stumbled upon this LiDAR 101 video, produced by the Carl Vinson Institute of Government at University of Georgia, while Googling for something else. In ~13 minutes, it does a nice job of summarizing LiDAR technology, data products, the costs associated with acquiring data, and various applications. It is worth a watch if you are looking for a quick crash-course in LiDAR or need a video to show in the classroom:
Are there other good introduction to LiDAR videos out there? Leave a comment if you are aware of others.