Every year the website Edge.org poses a provocative question to some of the world’s brightest bulbs. The 2009 question is out.
The respondents include Nick Bostrom, Paul Davies, Richard Dawkins, Daniel Dennett, Freeman Dyson, Brian Eno, David Gelernter, Sam Harris, Marc Hauser, Stuart Kauffman, Laurence Krauss, P.Z. Myers, Steven Pinker, Rupert Sheldrake, Michael Shermer, Frank Tipler, J. Craig Venter, Frank Wilczek, and lots of others.
Have a look here.