Bing Crosby appears in Bart and Homer's Zombie Golf Game. In real life in a shocking coincidence, Crosby died on a golf course.
Bart calls Homer "Dad" in this episode, then says "there's a first time for everything." Actually, Bart does frequently call Homer "Dad," in addition to using his first name.
During the intro the picture of Maggie that Bart takes off of the wall is completely different when seen on the couch.
Bart's chalkboard gag "We'll miss you Vin Scully" references the retirement of Dodgers broadcaster Vin Scully.
Lou says he has a son who lives in Baltimore. In 'Bart Sells His Soul', Bart's school friend Louis is shown to be his son.