Kimmy asks, "if his name is Mario and they're the Mario Brothers, does that mean his name is Mario Mario?" According to the Super Mario Brothers movie (1993), this is in fact the case.
Tina Fey's husband, music director Jeff Richmond, appears briefly as Titus's accompanist.
While at the Polish fest, Andrea throws a glass and slurs, "Breaking stuff, that's you guys right?" Breaking glasses and plates during celebrations is actually a Greek tradition. Tina Fey, who both created the show and plays Andrea, is of Greek descent.
A sick Mikey tells Titus that he is glad Titus is not a giant crab. Actor Tituss Burgess played Sebastian, a crab, on Broadway.
When Tina Fey guest stars as Andrea, she talks to Ellie Kemper's Kimmy about her severe alcoholism by bitterly stating "One time, to get white wine, I listened to BJ Novak give a free book reading." Novak and Kemper acted on the U.S. version of "The Office" at the same time during Seasons 5 through 8.