A couple months ago I was thinking about some stuff related to moral rules for simple simulated agents, googled a few relevant keywords and the first reference was someone referencing a 2004 blog post of mine about the first book in your list, Artificial Morality. The thing is that I have no recollection reading that book, even less blogging about it, and that was years before I started reading Overcoming Bias. Even rereading my old post didn't help me remember. And my blog has been down since maybe 2006/2007 (not that there was anything worth keeping there).
It's a bit scary to follow a line of thought, and then find out that you already thought that years ago and totally forgot. I guess a human made immortal would get that feeling all the time.
This is explained by the fact that we've all been alive for no more than two or three years. Every memory before 2009 is fabricated ;)
I read that link, and I still can't quite decide if my reaction is closer to "Well, I gotta give him points for scholarship" or "Glory to Haruhi-sama! Death to the unbeliever!"
I think I'll split the difference by both upvoting you and hiring an assassin.
I had a similar, but less extreme, version of that the other day. I was reading an unfamiliar thread from 2010, and I wanted to upvote a comment, but I saw that I'd already upvoted. That was confusing. It happened a couple more times, and I wondered when I had done that. I couldn't remember ever having been to the thread before. Then I saw some comments I wanted to reply to--complete with replies from myself, saying similar things. That was finally enough to jog the memory of the last time I'd read the thread, but it was still a surprise. My opinions, or at least my way of expressing them, had changed a little, but I got the same sense of deja non-vu you did.
I have no idea if ethics and robotics is any good, but I assume it's been left off this list because it is "ethics for humans regarding robots" instead of "ethics for robots"?
Timeline: