Paul House is the author of Old Testament Theology (IVP, 1998), one of my favorite biblical theology texts (also available in Logos). I highly recommend it for understanding the theological purpose driving each block of the OT text. This weekend I discovered 20 lectures Dr. House delivered at Beeson Divinity School in 2002 on OT theology. Those lectures are available online from biblicaltraining.org where users can stream the lectures online and—after a free registration and login—download the mp3s for free. For the lectures click here.