Professor David Harvey has for 40 years taught a course in Marx's Capital at CUNY. In April 2010 he gave a lecture at the Royal Society, available here, listing five conventional wisdom explanations for our ongoing global financial and economic crisis and then explaining it in Marxist terms of "essential internal contradictions of capitalism."  No Marxist solutions--or any solutions--offered, however.  I recommend the 11 minute animated version; click Play in the middle of the cartoon.  The longer, drier version is also available in a link just below. Hat tip to Linda Beale.