- Acting in the Dark: Charisma Carpenter agreed to do the episode on the condition Cordelia wasn't killed off. She was initially furious when she found out that was going to happen, but upon seeing the script and how it would be done, she was moved to tears.
- The Cast Showoff: Christian Kane, who went through two-and-a-half months of sword training for his role in Secondhand Lions, approached the writers to see if they could work his new skills into the episode. Kane ended up performing his own stunts for the sword fight sequence, including wire work.
- Completely Different Title:
- German: Menschen wie wir (People like us)
- French: Le retour de Cordélia (Cordelia's return)
- Content Leak: There were initially two endings penned for this episode, the real one, and another with Cordelia simply leaving rather than dying. This was an attempt to keep the real ending a secret from the spoiler leaks that occurred with most episodes. However, the real ending was leaked shortly before air, rendering the attempt unsuccessful.
- Creator Backlash: Christian Kane was legitimately offended by a line where Angel refers to Lindsey as a "tiny Texan" - which he claims Joss Whedon put in there as a Take That! to him. Kane was born in Texas, but his family eventually settled in Oklahoma and he attended the University of Oklahoma - which has a longstanding rivalry with the University of Texas.
- Enforced Method Acting: As David Boreanaz was uncomfortable remembering the late Glenn Quinn, Christian Kane says the plot point of Lindsey pretending to be Doyle helped add to the animosity between them on-screen.
- Looping Lines: Charisma Carpenter had to re-record Cordelia's final line after filming wrapped because she was originally so choked up while saying it that she gave away Cordelia's surprise fate.I guess I had indicated in a way [that] I was sharing a loss, like I was sad. I knew what was coming. And they didn't want it to be given away.
- Milestone Celebration: This is the 100th episode of the series. James Marsters also appeared in the 100th episode of Buffy, "The Gift".
- Recycled Set: David Fury used tight camera angles during Spike's apartment scene with Lindsey to disguise the fact that the same set was used earlier for the opening teaser. "Everything is a bit contained; the reason is if I turn around, this is where they found the dead nuns," Fury explains.
- Throw It In!: During the fight scene between Eve and Harmony, Mercedes McNab slapped Sarah Thompson accidentally. "She was so worried she'd hurt me but it actually worked well for the take because I reacted by really screaming."
- Uncredited Role: Though not credited, Joss Whedon wrote the final scene between Angel and Cordelia.
- What Could Have Been: Cordelia's role was originally meant for Buffy and you can see the end of the previous episode foreshadowing a Buffy appearance. Sarah Michelle Gellar had to cancel at the last minute, due to a death in her family. The episode plot would have revolved more around Buffy's conflicting feelings for Spike and Angel.
- Written-In Infirmity: David Boreanaz was recovering from knee surgery at the time, so many scenes were written to have Angel sitting down.
Trivia / Angel S 05 E 12 Youre Welcome