In the scene where Willow and Tara have the awkward conversation in front of the Magic Box, Willow is seen wearing the EXACT outfit she wears during the climax of the season (Last three episodes) Black jacket with studded buttons and black jeans.
The one vinyl LP which is clearly visible during the first scene with the Troika is Frampton Comes Alive. Released in early 1976, the album eventually sold over six million copies, spent 10 weeks at #1, and 96 weeks on the billboard top 200 albums.This album became the top selling album of 1976, and, at the time, it was the top selling live album of all time. Now, more than 30 years later, it is still the fourth best-selling live album of all time.
Near the end of the final scene between Buffy and Tara, Buffy puts her head down on Tara's legs. Tara then leans forward and puts her hands on Buffy's head (Buffy is out of the shot here). The shot changes to a side view and Tara leans forward and places her hands on Buffy's head for a second time.
Katrina, Warren's ex-girlfriend from I Was Made To Love You (5x15), marks Warren's first kill.
In the scene when Buffy is fighting the demons in the woods, and accidentally hits Katrina. Watch Katrina closely as she falls on the top of the hill, just below her you can see the cardboard pop up.
When Warren is talking at the start about the Cerebral Dampener, there is a bang hanging down on his forehead. Then while he is still talking it cuts to a close up shot of him, and his bang is up with the rest of his hair, and he clearly didn't touch his forehead because the camera was on his face the whole time.
It's weird how Buffy and Spike can fight beside the police building and yet haven't been caught for violence!
Spike: You always hurt the one you love, pet.
Spike: That's my girl.
Buffy: I am not your girl! You don't have a soul! There is nothing good or clean in you. You are dead inside! You can't feel anything real! I could never be your girl!
Buffy: A girl is dead because of me!
Spike: How many people are alive because of you? How many have you saved?
Xander: You've been going at it too hard, Buffy. We hardly ever see you, what with slinging the Doublemeat and pounding the big evil.
Anya: You are looking a little pounded. Just around the eyes.
Andrew: What happens now?
Jonathan: Well, the night's young. Gotta be some more girls we could kill.
Buffy: (about Spike's crypt) This place is okay for a hole in the ground. You fixed it up.
Spike: I ate a decorator once. Maybe something stuck.
Buffy: We missed the bed again.
Spike: Lucky for the bed.
Spike: Do you even like me?
Buffy: (long pause) Sometimes.
Spike: ...But you like what I do to you. (Another long pause. Pulls out a pair of handcuffs) Do you trust me?
Spike: You try to stay with them. But you always end up in the dark places, with me.
Spike: Stop me.
Sarah Michelle Gellar, in an interview with Entertainment Weekly shortly after she announced quitting the show, said that this episode was her least favorite. The reasons she gives are that in her opinion, the whole sixth season put across an overtly different Buffy Summers and strayed from the original message of the show. She mentions Buffy's balcony scene with Spike as being her least favorite scene from the show's run.
This is the second time during the run of Buffy that we see Buffy think she's "killed" a "human." The first time is in Ted, where she "kills" the robot Ted, and this time, when Buffy is tricked into thinking she killed Katrina. This is perhaps a nod to the strength of Buffy's character, as even after having been in heaven she still feels just as guilty as she had the previous time.
According to the date on Warren's computer, the events of this episode occur around February 5, 2002 which is also the day this episode aired.
Amelinda Embry's husband Ethan Embry co-starred with Nicholas Brendon in the 2004 TV movie Celeste in the City as well as Can't Hardly Wait with Amber Benson, Seth Green, and season 1 guest star Clea DuVall.
The music playing when Buffy and Spike are on opposite sides of the crypt is "Out Of This World" by Bush.
Buffy: Is There Singing? Are we singing again?
When she sees Dawn and Xander dancing she is worried that Sweet, the demon from Once More With Feeling (6x07) who had the power to make people sing and dance, has been called again.
Buffy: So that's why time went all David Lynch?
David Lynch is the creator of the outstanding yet confusing drama Twin Peaks. The show was filmed at times very similarly to the fight scene in which Buffy "kills Katrina." Anya explained that the presence of the demons in this dimension caused a sort of temporal imbalance in time and space, causing the distortion.