Greg Koukl was given in Ottawa recently. (H/T: Wintery Knight). Koukl introduces what he calls the "ambassador approach," which consists of knowledge, wisdom, and character. A good basic introduction to the apologetic task and persuasive evangelism. (Get the fuller treatment in Tactics.) Be sure to check out his other resources at Stand to Reason, as well as his interview here at Apologetics315.
Full MP3 Audio here. (40 minutes)
What was last year's post? See here.