Check out TeacherTube. If you want to find out what’s going on in the TeacherTube community, then jump straight across to the TeacherTube blog launched in March. TeacherTube is the YouTube of educators, and recently it launched a channel for student-created videos. You can find loads of resources that have been uploaded by teachers from around the world. 
For instance, the TechTips ScreenCast Episode 5: Collaborative Research provides information on how Del.icio.us social bookmarking has been used for a student research project. The result is a website aggregating the research results of the very best websites on Mesopotamia that students had found, with descriptive phrases added to each bookmarked site.
Thanks go out to TeacherTube community member Anne Bubnic (http://abubnic.blogspot.com/) for pointing us to the current research. The following article references are posted on the The California Technology Assistance Project (CTAP) Region IV math project site:
Scientific Research Indicates that Using Video in the Classroom Improves Learning http://www.libraryvideo.com/articles/article18.asp
Using Video in the Classroom – There is substantial research promoting the use of video in the classroom as a dynamic resource for supporting curricula. http://www.libraryvideo.com/articles/article13.asp
Video Goes to School – a 3-part series at http://www.eschoolnews.com/news/showStory.cfm?ArticleID=5597
KQED – using video effectively – http://www.kqed.org/topics/education/educators/videoclassroom/effective.jsp
Why It Works – a series of papers & research studies from United Streaming. http://www.unitedstreaming.com/home/why.cfm?id=3
The research confirms the power of video in teaching and learning. But TeacherTube users, we want to hear specific examples of how you are using video. Please share your success stories!
judyoconnell.com 
i am a communication science student at the University of Zululand in South Africa northern of KwaZulu Natal. I am doing multimedia video and sound editing. I am now busy doing a video project and my topic is about the residences at the University of Zululand, we have to compare the old and the new residences. So me and my colleauges, we have to take footage of the residences and interview students.