Some instructive economics movies, presentations and speeches are found here

A BIG selection of talks of any kind (inspirational, economics, ….) is found here (search for neuroeconomics, incentives, game theory,…)

Econtalk of the Library of Economics and Liberty is a rich source of fascinating speeches on significant economic issues. 

The Royal Economic Society has started webcasts as well as a YouTube channel (see, for example, why are there cities?)

In Game Theory, you might like the clips given here. And you do not want to miss A Beautiful Mind (Nash equilibrium -- is this a Nash equilibrium?)

There are authoritative lectures on how to publish in international top journals.

And, on a different note, Keynes vs. Hayek I and Keynes vs. Hayek II. Econ films TV is here. 

Also, I really like the motivational speech of Steve Jobs' 2005 Stanford Commencement Address.

Webcasts of most interesting presentations of the ASSA meeting (Philadelphis 2014) are here.