Morn Mark Allen Shepherd is heard laughing at a joke told by Quark. Although Morn appears in 93 of the series' 173 episodes, he never speaks during the series. This is the only episode you hear his voice, albeit laughing. The laugh is Shepherd's own voice.
The Ferengi face seen on the Grand Nagus' staff was originally sculpted to resemble Armin Shimerman's Quark.
The screen behind O'Brien in the school scene includes a figure of the puppet aliens from the TOS: "Catspaw", as well as tribbles.
While not the first episode to feature Max Grodénchik as Rom, his voice and mannerisms are completely changed in this episode to the ones he will be known for during the rest of the series.