Ravi Zacharias has a radio program called “Let My People Think” which airs on many stations. You can listen to the programs online at this link:
The most recent three programs have been very insightful and interesting. If you have not heard this man talk, I encourage you to take some time and listen to these programs. He has a wealth of experience with many levels of people, and the unique ability to speak to not only deep intellectual issues but also the human factors that are so important to everyone.