Dr.Paul has an interesting conversation with Greg Koukl. You can watch the main topics in the following videos:
Greg Koukl answers your tough questions
Greg Koukl: Deepak Chopra’s Quantum Nonsense
Greg Koukl: Did Christians start the Dark Ages?
Greg Koukl vs Sadhguru: Did Jesus visit India?
Greg Koukl vs Richard Dawkins: Evil Disproves God. Right?
Greg Koukl vs Dalai Lama: How Buddhism Fails
Greg Koukl: Why College Students Leave Christianity?
Greg Koukl: Are Buddhism & Hinduism more friendly to science than Christianity?
Greg Koukl vs Hitchens: Who made God?
Greg Koukl: Christians who sin. Will they lose their salvation and go to hell?