I enjoy using YouTube, and my students, too, appreciate what I find for them there. Little clips that dramatize and enrich what we're learning in class. Students can relate to these. We can also post their own presentations, giving instruction and student group activities a "Hollywood" look. It's very motivating knowing they're going to be "on TV". The videos I've tried to embed are blocked, so I'll have to try again later when I have more time.