So I will hop on the bandwagon soon, too, I promise. Anyone else out there want to give it a try?
UPDATE: Prof. Caplan has his autobiography up now, and it's an interesting contrast to Prof. Thoma's. Caplan seems a little naive about the effects of class, if you ask me, but judge for yourself:
From what I've seen, the standard function of class autobiography is to make middle- and upper-class authors feel guilty, and the lower- and working-class authors feel resentful. But reflecting on my class history doesn't make me feel guilty. Rather, it confirms the common-sense view that in the long-run, differences in ability and character are the cause of class differences, and not the other way around.