This is so excellent I want to share it for the weekend. It is Pastor Tim Keller of Redeemer Presbyterian Church in New York City. It is about the reasons for believing in God. The question and answer part at the end is very interesting.
From the site: "Tim Keller visits Google's Mountain View, CA, headquarters to discuss his book, "The Reason for God." This event took place on March 5, 2008, as part of the Authors@Google series." There is some problem at first with short pauses. That will go away after a while.