Westminster Theological Seminary, Reformed Theological seminary and Covenant Theological Seminary have placed online course lectures on the Gospel Coalition site for free. What a resource!
You might check out:
D. A. Carson on the New Perpective on Paul
John Frame on the Doctrine of the Knowledge of God
J. I. Packer on the History and Theology of the Puritans
Wilson – Hitchens Debate: Atheism vs. Christianity
Tracts & Treatises 
Wow, looks like a great resource.
I saw you linked to van Til. Just out of curiosity, do you align yourself with his presuppositional apologetic method?
Eric,
Yes I do think the presuppositional approach is biblically grounded. For instance, from Genesis 1:1 forward God seems to assume his own existence rather than argue for it. Since we will be going through Romans as a congregation, it might be helpful to point out Paul’s presuppositional approach in chps 1-2 also. He presupposes that all men have a knowledge of God already. They just deny him and worship created things.
I appreciate things like the logical arguments for God’s existence, but I tend to see their value as mainly for edifying believers.
BR
iTunes also has GREAT resources for theology. (of course you have to use wisdom and discernment!)
Wayne Grudem’s Systematic Theology
Systematic Theology I-III – Reformed Theological Seminary
(reformed theological seminary has MANY MANY actual video class Podcast)
History and Theology (ibid)
Introduction to Theology -Dallas Seminary
not familiar w/covenant theological seminary ? but they have several too.
For more lectures on presuppositional apologetics, you can check out http://christcollegeblog.com/2011/01/14/biblical-presuppositional-apologetics-lectures/.
These are taught by Michael Butler, a student of Greg Bahnsen’s.