CBS | 9:00 pm
Leonard (Johnny Galecki) puts his career in jeopardy by giving an interview that doesn’t cast him in the best light — to put it mildly — in "The Retraction Reaction." The whole university reacts badly to his comments, and he needs Penny’s (Kaley Cuoco) shoulder to lean on in the aftermath. Amy and Bernadette (Mayim Bialik, Melissa Rauch) find a common bond. Guest stars Ira Flatow and Regina King return. Jim Parsons also stars.