Big Al,
If you are seeking a graduate level, university style exposition on the Book, my pastor has a great many of his 29 years of teachings available in Real Audio (and Web TV) with the newer messages in Real Video (low, medium and high speed streams). Most of the Video teaching relates to the "recent" Romans Series (the last several years) or a related excursion he took into the Psalms.
Although he gets into Greek, Hebrew, Aramaic, Syriac, Coptic, Chaldea, etc., he is particularly good at relating those somewhat arcane academic exercises to a general level of knowledge. He teaches using the Gestalt Method.
He is a great researcher who uses his vast libraries of scholarly resources, but unlike some teachers, he is not afraid to liberally attribute them and other good teachers and expositors of God's Word -- men like G. Campbell Morgan, R. A. Torrey, C. H. Spurgeon, Boyce, Barnhouse, etc., while not ignoring by any means the early Church Fathers. He is the best expositor of Paul I have ever heard, so you can rest assured you will get real Bible exposition and exegesis, not opinion and "warm fuzzies" that may be misleading. Most of his teaching segments are 1 to 1.5 hours in length.
If you are interested, you can access his archives at
http://www.drgenescott.com/thearchives.htmYou can also take "eclectic potluck" by accessing whatever the Network is streaming "live" 24 hours a day 7 days a week in Real Video and MS Windows Media Player (and VDO) at
http://www.drgenescott.com/listen-live.htmCheck it out if you really want some in-depth teaching that never gets boring.