Introduction to Marxism

[M. O.]

Crisis and Openings: Introduction to Marxism - Richard D Wolff
http://www.youtube.com/watch?v=T9Whccunka4

Pretty good lecture.

[M. O.]

Here's another one, it's long so more likely to be suitable as a podcast than a video.

Global Capitalism: June 2015 Monthly Update
http://www.youtube.com/watch?v=OAeRzDnY90E

I think he is a bit too optimistic about Syriza/Podemos, but even if you don't agree with him, in general, it's a good listen and a refreshing way of looking at recent developments.