Borg is well known as a prominent member of the Jesus Seminar, though I've pointed out elsewhere that his work is qualitatively different than most of what has been published under their banner. He is also particularly known for persistently challenging eschatological reconstructions of the historical Jesus, though my own sense is that Borg (and others) lost that debate before it started simply because of the stark binary dichotomy that proponents of a sapiential Jesus often foist upon the ancient data.
Personally, I'm not particularly interested in Borg's prescriptions for how to be Christian in the twenty-first century. If this were a lecture series about the historical Jesus, I would be much more likely to shell out the $45.00 registration fee. For those of you with a more pastoral bent, however, the cost is less than 6.5 hours of labor at the current Federal minimum wage. Well, that's before taxes.
[HT: Daniel Overdorf]