This site has a lot of video resources from the US on several curriculum areas such as Science, English, Maths and The Arts. I have personally used many of the videos for Science on water and plants. You do need to register to use the site, but registration is free and with no obligation.
The following is the websites blurb on what they are all about…..
Teachers’ Domain is a free digital media service for educational use from public broadcasting and its partners. You’ll find thousands of media resources, support materials, and tools for classroom lessons, individualized learning programs, and teacher professional learning communities. http://www.teachersdomain.org/