1. A system comprising: a plurality of headsets, wherein each headset is worn by a viewer of a plurality of viewers located at a venue, each headset including at least one sensor and a transmitter, wherein the plurality of viewers is watching a media instance, wherein each headset receives physiological data from the corresponding viewer; a signal collection device located at the venue, the signal collection device receiving the physiological data transmitted by the plurality of headsets via a wireless coupling; and a processing module that receives the physiological data from the signal collection device, wherein the processing module derives from the physiological data a plurality of physiological responses of the plurality of viewers to the media instance.