more on the discussion of copyright; Jenny Luca explains how she works with students as they develop their own videos on a related educational topic...trailers for good books in this case; links to her complete blog posting are available
Kideos is a video website designed with kids under ten years old in mind. Videos on Kideos are categorized by age appropriateness as well as by topic. Most of the videos appear to be served via YouTube but are displayed with the Kideos border which removes advertising and YouTube's "related videos" and comments. (from Free Technology for Teachers)
One of my Yr 10 students made this grammar tutorial on Relative Pronouns without much guidance from me. This isn't a topic that I normally teach at Year 10 level so I'm very impressed!