Brian Koppelman Loves the SiriusXM App

Talented screenwriter raves about using the program on his mobile phone

Star screenwriter Brian Koppelman called in to rave about how much more he exercised now that the SiriusXM iPhone app carries the Stern show: "I've been waiting for this for so many years. Howard, it's the greatest. You know, since I was 15 or 16, I've been listening to you guys. I walk across the park every these couple of days, it's entirely changed the walk! I mean, it's made me want to walk longer."