The Podcast History of Our World - ancient civilations covered here.
The History Chicks - 2 women talking about women in history (note: some are American)
Mr. Geoffrion's World History podcast. Mr. Geoffrion is an AP History teacher
Crash Course videos on world history topics. There are 42 videos in this series.
Global History short histories and song parodies to get you started on an idea.
World History videos for high schoolers. these videos also provide short overviews.