This episode was being broadcast on CBS at the very moment that John Lennon was shot to death by Mark David Chapman outside his apartment building, The Dakota, at 10:50 pm (EST) on December 8, 1980.
Donovan tells Lou that Kelly Morrow is on that show "about the big family in Oklahoma City that owns all the oil wells, where everybody is trying to stab everybody else in the back." This is a parody of Dallas (1978), another CBS series.