The "Crash Course" World History site on YouTube currently has videos on a wide variety of topics. The videos are approx. 12 minutes each, and there are 37 videos to date.
Sample Video- Agricultural Revolution:
![](http://i1102.photobucket.com/albums/g447/eschaff/Teacher%20Technotopia/sgn2.png)
Sample Video- Agricultural Revolution:
![](http://i1102.photobucket.com/albums/g447/eschaff/Teacher%20Technotopia/sgn2.png)