Tipler did some excellent work in mathematical relativity before going off the rails shortly thereafter.
I'm very grateful to the undergraduate professor of mine that introduced me to Penrose and Tipler as a freshman. I think at that time I was on the cusp of falling into a similar failure state, and reading Shadows of the Mind and The Physics of Immortality shocked me out of what would have been a very long dogmatic slumber indeed.
...has finally been published.
Contents:
The issue consists of responses to Chalmers (2010). Future volumes will contain additional articles from Shulman & Bostrom, Igor Aleksander, Richard Brown, Ray Kurzweil, Pamela McCorduck, Chris Nunn, Arkady Plotnitsky, Jesse Prinz, Susan Schneider, Murray Shanahan, Burt Voorhees, and a response from Chalmers.
McDermott's chapter should be supplemented with this, which he says he didn't have space for in his JCS article.