Following are links to each lecture:

LOST CHRISTIANITIES:
Christian Scriptures and the
Battles over Authentication


Taught by Bart D. Ehrman
The University of North Carolina at Chapel Hill
M.Div., Ph.D., Princeton Theological Seminary
(24 lectures, 30 minutes/lecture)

For those not familiar with Dr. Ehrman (from his web page):

Bart D. Ehrman
The University of North Carolina at Chapel Hill
M.Div., Ph.D., Princeton Theological Seminary


Bart D. Ehrman is the James A. Gray Professor and Chair of the Department of Religious Studies at The University of North Carolina at Chapel Hill, where he has been teaching for over 15 years. He completed his undergraduate work at Wheaton College and received his Masters of Divinity and Ph.D. from Princeton Theological Seminary. Prior to taking his position at UNC, Professor Ehrman taught at Rutgers University.

Professor Ehrman has published dozens of book reviews and scholarly articles for academic journals. He has authored or edited 17 books, including the New York Times bestseller, Misquoting Jesus, Jesus: Apocalyptic Prophet of the New Millennium, The New Testament: A Historical Introduction to the Early Christian Writings, and After the New Testament: A Reader in Early Christianity. He has served as President of the Society of Biblical Literature, Southeast Region; book review editor of the Journal of Biblical Literature; and editor of the Scholar’s Press Monograph Series The New Testament in the Greek Fathers.

Professor Ehrman has received several teaching awards, including the Students’ Undergraduate Teaching Award, the Ruth and Philip Hettleman Prize for Artistic and Scholarly Achievement, and the Bowman and Gordon Gray Award for Excellence in Teaching.

These videos are on Google Video, so I am assuming it is OK to do this! 

Lecture 1: The Diversity of Early Christianity

http://video.google.com/videoplay?docid=9048344507587276400

Lecture 2: Christians Who Would Be Jews

http://video.google.com/videoplay?docid=-7490889784196657092

Lecture 3: Christians Who Refuse To Be Jews

http://video.google.com/videoplay?docid=3176152235262198218

Lecture 4: Early Gnostic Christianity-Our Sources

     http://video.google.com/videoplay?docid=3861552612295632535

Lecture 5: Early Christian Gnosticism-An Overview

     http://video.google.com/videoplay?docid=-2739712176824435099

Lecture 6: The Gnostic Gospel of Truth

      http://video.google.com/videoplay?docid=-6805391841613353687

Lecture 7: Gnostics Explain Themselves

      http://video.google.com/videoplay?docid=1997228186750030552
   

Lecture 8: The Coptic Gospel of Thomas

    http://video.google.com/videoplay?docid=-2212326285388048698
    
   

Lecture 9: Thomas' Gnostic Teachings

    http://video.google.com/videoplay?docid=892458842327632949

   

Lecture 10: Infancy Gospels

    http://video.google.com/videoplay?docid=7684746772290687143

   

Lecture 11: The Gospel of Peter

    http://video.google.com/videoplay?docid=5524845329788571916

   

Lecture 12: The Secret Gospel of Mark

    http://video.google.com/videoplay?docid=-7774922240851602667

   

Lecture 13: The Acts of John

    http://video.google.com/videoplay?docid=9037113610003144098

   

Lecture 14: The Acts of Thomas

    http://video.google.com/videoplay?docid=-1912310102841940235

   

Lecture 15: The Acts of Paul and Thecla

    http://video.google.com/videoplay?docid=-4847421021839469277

   

Lecture 16: Forgeries in the Name of Paul

    http://video.google.com/videoplay?docid=4112182430944852249

   

Lecture 17: The Epistle of Barnabas

http://video.google.com/videoplay?docid=-8528706826666648230

   

Lecture 18: The Apocalypse of Peter

    http://video.google.com/videoplay?docid=-7587868520948688772

   

Lecture 19: The Rise of Early Christian Orthodoxy

    http://video.google.com/videoplay?docid=15370758182016345

   

Lecture 20: Beginnings of the Canon

    http://video.google.com/videoplay?docid=4099996650094226850

   

Lecture 21: Formation of the New Testament Canon

    http://video.google.com/videoplay?docid=-8178525136315152970

   

Lecture 22: Interpretation of Scripture

    http://video.google.com/videoplay?docid=-6645258063084080138

   

Lecture 23: Orthodox Corruption of Scripture

    http://video.google.com/videoplay?docid=-858817111350827482

   

Lecture 24: Early Christian Creeds

    http://video.google.com/videoplay?docid=-5218941935016077457