David Chalmers is University Professor of Philosophy and Neural Science and co-director of the Center for Mind, Brain, and Consciousness at NYU.  He is president-elect of the American Philosophical Association.  He is known for his formulation of the "hard problem" of consciousness, which inspired Tom Stoppard's play, The Hard Problem, and the idea of the "extended mind", which says that the tools we use can become parts of our minds.

Al Lubel is stand up comic and a regular at The Comedy Cellar. His special, Mentally Al, is available on YouTube.