Stephen asks the cast of “The Big Bang Theory” questions that they anonymously submitted for each other, like: how did Kaley Cuoco learn her lines if she was never seen looking at her script?! Featuring Jim Parsons, Johnny Galecki, Kaley Cuoco, Kunal Nayyar, Mayim Bialik, Melissa Rauch, and Simon Helberg. | The Late Show with Stephen Colbert