This is a great and very short YouTube video of a snippet of a lecture by David Harvey presenting a Marxist analysis and explanation of the most recent crisis of capitalism, and it is accompanied by a very cool animation illustrating the analysis.
A word about David Harvey. At this point in history, he is an amazing resource for understanding Marx's very difficult magnum opus, Capital. This is because Harvey has been teaching a course on the book for something like 20 years, and now the course is available on the inter-tubes in multiple video and audio formats, and in his very pleasant British accent. You don't even have to attend Columbia University (Or is it NYU?)! I will be linking to the course and his web site soon.
Interestingly enough, Harvey's primary academic discipline is geography, not economics. And now he has a professorship in an anthropology department. A man after my own heart, Marxist economics, anthropology and geography. Enjoy.