Young Sheldon

CBS | 8:00 pm

Season 4 of this "The Big Bang Theory" spinoff opens with "Graduation," a reference to title character Sheldon's (Iain Armitage) very early graduation from high school. The boy genius suffers a breakdown, though, when he has a crisis of confidence over whether he's ready to begin college. Elsewhere, Dale (guest star Craig T. Nelson) tries to make amends with Meemaw (Annie Potts). Wallace Shawn also guest stars; Zoe Perry and Lance Barber also star.