Laurence Vance's excellent lecture at the Austrian's Scholar's Conference, where he shows that most Christians, including notable theologians and Christian "economists," have seriously flawed views on economics:
Laurence Vance: The Myth of the Just Price
(above video link is updated and does not cut off at the end)
Also see the transcript.
See my Mises Institute Videos blog post for more videos, or see the Mises.org media page.