Hank and John Green have been making online video since 2007 and now have over 1500 videos on YouTube between them that, combined, have been viewed more than 500,000,000 times. This is from their "Crash Course: History" series
In which John Green investigates the dawn of human civilization. John looks into how people gave up hunting and gathering to become agriculturalists, and how that change has influenced the world we live in today. Also, there are some jokes about cheeseburgers.
The History of WWII Podcast - by Ray Harris Jr
Many historians have their own blogs. Here is a list of the top 50 History Blogs. It is categorised by:
Ancient History, Classical History, European History (Medieval and Renaissance), South American and Mesoamerican History, Asian History, Middle Eastern History, African History, Pacific Islands History.
A couple of the blog's feeds have been highlighted in this section.
Have a look at "Invisible History", for example.
Another blog that frequently features history: "In Our Time" -- presented by Melvyn Bragg:
“Melvyn Bragg and his guests discuss the history of ideas - including topics drawn from philosophy, science, history, religion and culture.” Long discussions approx 45 mins each. Big range of topics.
In "The World in Time," the founder and editor of Lapham's Quarterly interviews historians and scholars about contemporary world views in historical context
Melvyn Bragg and his guests discuss the people, conflicts and events that have shaped the world.