On October 29th, I asked Eliezer and the LW community if they were interested in doing a video Q&A. Eliezer agreed and a majority of commenters were in favor of the idea, so on November 11th, I created a thread where LWers could submit questions. Dozens of questions were asked, generating a total of over 650 comments. The questions were then ranked using the LW voting system.
On December 11th, Eliezer filmed his replies to the top questions (skipping some), and sent me the videos on December 22nd. Because voting continued after that date, the order of the top questions in the original thread has changed a bit, but you can find the original question for each video (and the discussion it generated, if any) by following the links below.
Thanks to Eliezer and everybody who participated.
Update: If you prefer to download the videos, they are available here (800 MB, .wmw format, sort the files by 'date created').
Eliezer Yudkowsky - Less Wrong Q&A (5/30) from MikeGR on Vimeo.
(Video #5 is on Vimeo because Youtube doesn't accept videos longer than 10 minutes and I only found out after uploading about a dozen. I would gladly have put them all on Vimeo, but there's a 500 MB/week upload limit and these videos add up to over 800 MB.)
If anything is wrong with the videos or links, let me know in the comments or via private message.
Text transcription of Eliezer's answers