I came across the website called TeacherTube and I thought it was a great way for teachers to find and upload their videos that they use in the classroom. Teachers can also use it as professional development to learn about different technologies, etc.
Here is one example of a video that explains How to Evaluate Websites:
This is an example of a video that a teacher created to go along with the song by Billy Joel for "We didn't start the fire." If I was still teaching U.S. History I would use this at the end of the school year for a wrap up. I have seen a few videos to go with this song, but this one seems to be done the best.