When talking about the Aliens series, a character says, "He's always had a thing for those 'Aliens' movies. Except for that last one they made - I think he dozed off." Series creator Joss Whedon wrote the script for Alien: Resurrection (1997), although it was heavily rewritten.
The set used for the train station was the same set used for the Hyperion hotel lobby, redressed with additional plants and benches.
Angel and Buffy's meeting, which is never shown on screen, is the subject of a comic by Buffy writer Jane Espenson called Reunion.
This episode marks Fred's cementation into the main group. Up until this point, it was uncertain if Fred's run on the show would mimic Doyle's, in which Joss Whedon had Glenn Quinn in the title credits only for 10 episodes until he let Doyle's character go.