Videos can be great supplements to your course lectures and good studying resources for your students. This list is reproduced from my blog Free Technology for Teachers.

1,2,3. This list cannot be started and would be totally incomplete if I did not start by mentioning Teacher Tube,, and iTunes U. My blog posts on the three services are here, here, and here respectively.
4. Viddler is a service that I enjoy using because of its integrated in-video commenting system. Read my review here.

5. How Stuff Works is a video site that I spent hours exploring in September because I was sucked in by the quality of the content. My blog post about it is here.

6,7. The History Channel and the Discovery Channel both offer a lot of content similar to and, in some cases, identical to that which is found on their respective television networks.

8,9 Vimeo and are two user generated content video sites that have gained some traction over the last year. My reviews of these services are available here and here respectively.
10 Dot Sub is full of user generated content that is subtitled into many different languages. I have a hearing impaired student this year that uses Dot Sub quite a bit.

11. If you're looking for current news content you may want to consider subscribing to the Reuters Video RSS feed.

12, 13. Along the lines of news videos, all of the major US Networks offer most of their nightly news as online videos. For news videos that are kid-friendly try CNN Student News. If you're interested in showing your students the inner workings of Congressional proceedings, visit the C-Span video library.
14. Hulu, a joint venture of NBC and News Corps, offers high quality video of television shows, movies, and old news broadcasts. You can read my review of Hulu here.

15, 16, 17, 18. For videos directly intended for use in the classroom visit the Kids Know It Network, The Futures Channel, Science Tube, and Math-A-Tube.

19, 20 TED and Big Think offer intellectual discussions and presentations about a wide variety of social, political, scientific, and economic topics.

21. Snag Films is a great place to watch full length documentaries from producers like National Geographic for free. My review of Snag Films is here.

22. Google Video serves a lot of results from YouTube, but you will also find non-YouTube videos in the mix that you can use in the classroom.

23. Nibipedia - Nibipedia takes the concepts of Wikipedia and YouTube and combines them. In other words if every Wikipedia entry had a YouTube or a Ted Talk video attached to it, you would have Nibipedia.

24. Untamed Science is a collection of videos and podcasts about biology and Earth science topics.

25. is similar to Big Think in that it presents videos relevant to topics in the news and in the public conscious today. The videos feature well known personalities and experts talking about the important issues of the day. You will also videos of debates, press conferences, and public meetings.

26. iCue, presented by NBC News, features videos about history and current events. There is a capability to connect with other students to discuss topics and learn together. There are also quizzes and learning activities associated with many of the videos.

27. School Tube is a website that is similar to Teacher Tube. School Tube's content is generated by teachers and students contributing videos about a wide variety of topics.

28. features user generated content about current news topics.

29. Next Vista is an academic video sharing site. Next Vista has three video categories. The Light Bulbs category is for videos that teach you how to do something and or provides an explanation of a topic. The Global Views video category contains videos created to promote understanding of cultures around the world. The Seeing Service video category highlights the work of people who are working to make a difference in the lives of others.

Academic Earth is a video depot for individual lectures and entire courses from some of the top universities in the United States. Visitors to Academic Earth will find lectures and courses from Yale, MIT, Berkeley, Harvard, Princeton, and Stanford.

31. comes to use from the same great people behind is similar in function and purpose to that of Teacher Tube.

32. One Minute Wonders from the BBC are short videos that explore all of the amazing things that happen in one minute. There are thirteen episodes of One Minute Wonders. Each episode consists of twenty short videos. Every episode has a corresponding quiz. Each quiz has five questions that continue to loop until the player gets all of the answers correct or time expires.

33. PBS Video offers videos from the most popular shows including Frontline, NOVA, Nature, and American Experience. For the younger crowd, PBS Kids offers videos as well. If you're not sure what you're looking for, but you think PBS has an appropriate video you can search the PBS Video center by topic.