This lecture discusses a philosophical argument about a popular Christian apologetic called Presuppositionalism - sometimes called the transcendental argument for God. The argument can catch people off-guard, because there are a lot of philosophically obscure issues that can be used to obscure some circular arguments. The video of the lecture is by Bill Zuersher as an antidote. It has a clear argument that points out the circular issues that invalidate the theistic argument.
Any members who enjoy philosophy or debating will probably like this.