I recently came across this three-part series on Reformed Theology, specifically focusing on Sola Scriptura. I believe the speaker is R. C. Sproul. Unfortunately, the sound is not well synchronized with the video, or wasn't when I watched it.
While I didn't catch any glaring errors in the presentation, I wouldn't suggest listening to these presentations uncritically. Hat Tip to Michael Patton at Parchment and Pen for bringing this to my attention (link).