I realize that I am being voted down here, but am not sure why actually.
I've downvoted your comments in this thread because I don't think serious discussion of the relevance of Objectivism to existential risk reduction meets Less Wrong's quality standard; Ayn Rand just doesn't have anything useful to teach us. Nothing personal, just a matter of "I would like to see fewer comments like this one." (I do hope to see comments from you in the future.)
Rand making some random remarks on music taste surely does not invalidate her recognition that being rational and avoiding extinction are or crucial importance.
Ayn Rand would hardly be alone in assenting to the propositions that "Rationality is good" and "The end of the world would be bad." A more relevant question would be whether Rand's teachings make a significant contribution to this community's understanding of how to systematically achieve more accurate beliefs and a lower probability of doom. As dearly as I loved Atlas Shrugged, I'm still going to have to answer no.
As promised, here is the "Q" part of the Less Wrong Video Q&A with Eliezer Yudkowsky.
The Rules
1) One question per comment (to allow voting to carry more information about people's preferences).
2) Try to be as clear and concise as possible. If your question can't be condensed to a few paragraphs, you should probably ask in a separate post. Make sure you have an actual question somewhere in there (you can bold it to make it easier to scan).
3) Eliezer hasn't been subpoenaed. He will simply ignore the questions he doesn't want to answer, even if they somehow received 3^^^3 votes.
4) If you reference certain things that are online in your question, provide a link.
5) This thread will be open to questions and votes for at least 7 days. After that, it is up to Eliezer to decide when the best time to film his answers will be. [Update: Today, November 18, marks the 7th day since this thread was posted. If you haven't already done so, now would be a good time to review the questions and vote for your favorites.]
Suggestions
Don't limit yourself to things that have been mentioned on OB/LW. I expect that this will be the majority of questions, but you shouldn't feel limited to these topics. I've always found that a wide variety of topics makes a Q&A more interesting. If you're uncertain, ask anyway and let the voting sort out the wheat from the chaff.
It's okay to attempt humor (but good luck, it's a tough crowd).
If a discussion breaks out about a question (f.ex. to ask for clarifications) and the original poster decides to modify the question, the top level comment should be updated with the modified question (make it easy to find your question, don't have the latest version buried in a long thread).
Update: Eliezer's video answers to 30 questions from this thread can be found here.