- Completely Different Title:
- French: Les chiens de l'enfer (The Hellhounds)
- German: Der Höllenhund (The Hellhound)
- Contest Winner Cameo: Jessica Johnson, the winner of the "A Buffy Christmas" sweepstakes, participated in this episode.
- Creator's Favorite Episode: Sarah Michelle Gellar named this as her favourite episode.
- Deleted Scene: This exchange was cut due to length:Giles: Fine. You're all suffering from a touch of spring madness, if you ask me.Oz: Mine is more space madness. But I'll feel better once I get used to the weightlessness.
Willow: Promise me you'll never be linear.
Oz: On my trout.
- Development Gag: Cordelia tells Wesley he'd look "way 007 in a tux". "Bad Girls"' shooting script describes Wesley as "thinks he's Sean Connery but he's pretty much George Lazenby."
- Out of Order: Due to "Earshot"'s airdate being postponed out of respect for Columbine victims, viewers of the original airing were unaware of Buffy preventing Jonathan from committing suicide. The fact that Buffy saved his life makes his presentation of the Class Protector Award to her even more significant.
- What Could Have Been: Tucker Wells was originally to have been the Big Bad of "The Trio" in Season 6. Instead, his little brother Andrew is a member.
Trivia / Buffy the Vampire Slayer S3E20 "The Prom"