The Open University hosts a series of six short videos intended to introduce viewers to some of the basic concepts of macroeconomics. In 60 Second Adventures in Economics you will find short videos explaining things like the Paradox of Thrift and Comparative Advantage. The video about comparative advantage is embedded below.

Applications for Education
60 Second Adventures in Economics is clearly not a replacement for actual lessons in economics, but they could be good introductions or reviews of a lesson.