Crash Course World History

All this talk about art and its historical backgrounds has made me want to review and refresh some topics...  Here's a great weekly web series that touches upon various world history topics.

http://www.youtube.com/playlist?list=PLBDA2E52FB1EF80C9

Their channel also has videos on biology/chemistry.  Hilarious, yet somewhat effective (if not more), way to learn and review!