They’re not your average musical group, but they’re not your average rock stars, either. Four Utah dads became piano movers of sorts, and in the process exploded into global music video sensations known as The Piano Guys. Lee Cowan introduces us to the men behind the YouTube hits. Source

Are we all spending too much time looking at our screens? Comedian Paula Poundstone thinks technology addictions are an attack on family time and the developing brains of our kids. Source

David Remnick is only the fifth person to hold the title of editor at The New Yorker. The weekly magazine is riding a new wave of popularity among young readers, and it’s Remnick (who’s been on the job for 17 years) that’s making it happen. Erin Moriarty of “48 Hours” profiles the editor behind the topics that many people are talking about. Source

Irises give eyes their color and regulate the amount of light that enters the eye. Dr. Jon LaPook reports how people born without irises are getting some high-tech help. Source

Director, J.J. Abrams’ fresh look at the nearly 40-year-old “Star Wars” franchise is just one of more than 40 new releases hitting theaters in the last six weeks of the year. ScreenCrush.com managing editor and film critic Matt Singer joins “CBS This Morning: Saturday” to discuss what to watch for among holiday releases. Source

According to “Drinking in America: Our Secret History,” a glass of beer, a bottle of rum, a keg of cider and a flash of whiskey were often the silent, yet powerful third parties to many decisions that helped shape the American story — from the 17th century to the present. Best-selling author and historian Susan Cheever joins “CBS This Morning: Saturday” to discuss her new book. Source

Juicing, cleansing and fad diets continue to grow in popularity, but they may not be the best way to re-boot your body. Also, a new study finds a handful of walnuts a day could provide some big benefits for people at high risk for diabetes. CBS News contributor Dr. Holly Phillips and Samantha Heller, a registered dietician and exercise physiologist, join “CBS This Morning: Saturday” to discuss the findings. Source

There is more controversy over prescription drug prices and Turing Pharmaceuticals CEO Martin Shkreli. Shkreli caused a public uproar when he drastically raised the price of a lifesaving drug for cancer and AIDS patients. He promised to cut the cost, but that was two months ago. Now he’s saying he will reduce the price for hospitals only, not individuals. Don Dahler reports. Source

Hundreds of people have taken to Chicago’s most prestigious downtown shopping district on Black Friday to protest the shooting death of a black teenager by a white police officer. WBBM’s Nancy Harty joined CBSN with the details. Source

Chicago police have arrested a suspect in the shooting death of 9-year-old Tyshawn Lee. Investigators called his death a “gang-related assassination.” 48 Hours” Crimesider’s Graham Kates joins CBSN with more. Source