If you are not acquainted with Ravi Zacharias and his ministry, you should be.
He is one of those rare intellects who is being used by God in a powerful way. From time to time I catch his radio program and I heard him speak in person several years ago in Alabama. Born in India, he now lives in the US, so he has that British English accent that is charming. But it is not his accent but the profundity of his thoughts and words that will enthrall you.
A very good example of one of his talks/lectures/whatever is the National Day of Prayer keynote address that he presented on May 1, 2008 in Washington, DC. Even though that was a year ago, it is still excellent and I highly recommend that you read it. HERE’S THE LINK