Hang Up And Listen

Stefan Fatsis, Josh Levin, and Mike Pesca talk with Slate's Dan Engber about the movie Concussion. They also discuss NFL refereeing, and Sports Illustrated's Tim Layden discusses Serena Williams over American Pharoah as SI's Sportsperson of the Year. Facebook: facebook.com/HangUpAndListen Email: hangup@slate.com Show notes at www.slate.com/hangup Learn more about your ad choices. Visit megaphone.fm/adchoices