NEW YORK, NY - SEPTEMBER 24: Actor Michael J. Fox answers fan questions during SiriusXM’s ’Town Hall’ series at SiriusXM Studios on
NEW YORK, NY - SEPTEMBER 24: Actor Michael J. Fox answers fan questions during SiriusXM's 'Town Hall' series at SiriusXM Studios on September 24, 2013 in New York City. (Astrid Stawiarz/Getty Images)