Joshua Sowin pointed me to these lectures delivered at the Maclaurin Institute.
Here are some that I think look interesting:
J. Budziszewski
Written on the Heart? The Case for Natural Law
Peter Kreeft
Tolkien's Worldview: How the Greatest Book of the Century Is a Religious Book
Peter Kreeft
10 Uncommon Insights About Evil in the Lord of the Rings
Jean Bethke Elshtain
Who Are We?: Human Prospects in an Age of Terror
Jean Bethke Elshtain
Just War Against Terror: The Burden of American Power in a Violent World
Ravi Zacharias
Christian Apologetics in the 21st Century
Scott Klusendorf
Abortion and Women's Rights
Alvin Plantinga
Against Materialism
Ken Myers
Media, Music and the Meaning of Life
Michael Behe
Toward an Intelligent Understanding of the Intelligent Design Hypothesis
Robert George
The Clash of Orthodoxies: Law, Religion and Morality in Crisis
James Calvin Schaap
Whither?--The Genre of Literature in a Media Age
Father Richard John Neuhaus
Culture Wars and Public Philosophy - Lecture and Q and A
Michael Novak
The Universal Hunger for Liberty: Why the Clash of Civilizations Is Not Inevitable