This is the video from his appearance at Saddleback Church (Rick Warren) that got such a big response. Saddleback is a pretty ordinary church, which lots of people with different levels of knowledge. How did Bill explain the Kalam argument to so many different ordinary people?
Watch and see!
You can also find a more technical version of the lecture here. This version is based on a research paper published in an astrophysics journal, and was delivered to an audience of students and faculty, including atheist physicist Victor Stenger and prominent atheist philosopher Michael Tooley, at the University of Colorado at Boulder. Craig has previously debated Stenger and Tooley. And they both asked him questions in the Q&A of this lecture.