Even one-on-one, your odds of having an opportunity to speak are slim.

Me neither. I am actually not familiar with his work, but knew he is known in the singularity/transhumanism camp. I've heard two discussions with him (with Paul Krugman and on Singularity on 1 on 1) and he came across as well articulated and with a decent understanding of the issues. He talked about how he changed his mind and grew more skeptical of singularity, but I don't know what causes this hostile reaction... :) Oh well...