Peter S. Williams (blog) delivered this talk at the 2010 European Leadership Forum on the topic: Arguments for Theism. He explores a variety of theistic arguments and offers his assessment on their merits and effectiveness apologetically. Williams also presents his own angle on Kalam argument commonly used by William Lane Craig. A good listen. This audio is part of Peter S. William's audio podcast at Damaris. Also check out a recent interview here.
Full MP3 Audio here. (100min)
You may also be interested in William's phenomenal book on the new atheism: A Sceptic's Guide to Atheism. Really, the best book on the subject, recommended by Ap315. Reviewed here.