William Lane Craig is a Protestant philosopher who is also one of the top voices in the Christianity vs. Atheism debates. His presentation of the Kalam argument for the existence of God and his presentations on the reasonableness of believing in the Resurrection are quite possibly the best I've ever encountered.

That said, he's still a Protestant. There's only so much I can endorse him. While the brunt of his stuff is second-to-none, the fringes get a bit frayed (like his take on transubstantiation and his lack of clarity on whether Muslims worship a different God or the same God as Christians but in a rather misunderstood way).

In any event, he's been doing a podcast for a little while and I've been listening to some of them. They're pretty good. Not as good as Peter Kreeft's stuff (check my side bar), but pretty good. Here are some of his podcasts:

2008/03/03	Did God Commit Atrocities in the Old Testament?
2008/02/25	Islam (pt. 3)
2008/01/07	Islam (pt. 2)
2008/01/01	Islam (pt. 1)

2007/06/25	The Existence of God (Resurrection of Jesus)
2007/06/18	The Existence of God (Moral Argument)
2007/06/11	The Existence of God (Fine Tuning)
2007/06/04	The Existence of God (Design)
2007/05/28	The Existence of God (Overview)