Scott Rassbach of the AJC gave a lecture on the Gospel and the Zodiac (based on the Unitarian minister Bill Darlison's book of the same name) as part of the AJC's Conclave 2009. A video of this lecture has been uploaded to Youtube, which you can watch in four parts below:
Another video of an interview with Bill Darlison himself (note that this interview was done before the book's release, and thus it is now widely available for purchase).
Finally, check out the book itself (my review of which should be in #2 of The Gnostic):