Angel comes to Sunnydale in a crossover that concludes in Angel: I Will Remember You (1999).
The flashbacks to Spike and Drusilla's collaboration with Angel and Darla are seen from Darla's point of view in Angel: Darla (2000).
While Tim saying Twist is like Cordelia he mentions this, "the spin-off series which is set in LA."
Angel comes to Sunnydale to comfort Buffy.
at one point, Spike thinks he is a "vampire with a soul," a statement that refers to Angel.
Angel comes to Sunnydale to help in the final battle against the First.
Buffy and Angel discuss their future.
When asked how he's doing as he's hacking into the Chinese general's safe, Marshall responds that he's "5 by 5". This is a very recognizable line to fans of Buffy the Vampire Slayer (1997) and its spin-off, Angel (1999), as it is the trademark saying of the character Faith. Episode writer and director Jeffrey Bell wrote, directed, and/or co-produced 61 episodes of 'Angel', and even appeared as an extra in the first episode of its final season.
Referenced by name
David Boreanaz, who played Angel, mentions the Hyperion Hotel.
football stadium's name "Wolfram & Hart" is same name as law firm on show
Quote: "I wish to do more violence"
Appears as an agent codename in the LaFleur list.
Joss Whedon is credited as the creator of "Angel."
DVDs are shown in a video store.
Castle uses the phrase "five by five", which was used by Faith on "Angel"
The tag line "Live Fast. Die Never." that appears on the "Tridark" poster, the fake vampire movie starring Jackson Tyler, was the official tag line of the vampire series Angel.
Annie says' there's a werewolf called Nina in Buffy', however, the werewolf called Nina is on Angel
Carolines description of Booth and Bone's interaction is very similar to Doyle's speech to Angel (also played by "David Boreanaz")
When Victoria first sees a hand through the basement window, you see a truck for "Wolfram Lock and Key" drive down the street. "Wolfram & Hart" is a fictional law group in the TV show Angel. Angel is a spin-off of Buffy the Vampire Slayer, which Emma Caulfield acted in for most of the seasons.
When Caroline Julian asks Booth to come back. She says Booth needs to convince "the powers that be." PTB was often mention in David Boreanaz's previous series.
Linkara discusses spin-offs in which characters become detectives
Ellis mentions the '90s "angel" craze
Amy Acker's character is grabbed by a giant octopus-like creature, much like Illyria's true form was supposed to look like.
There is a character named 'Buffy'
Lisa Plays the Theme Song on her Cello.
A huge demon from Angel is on display in the Almost Human lobby.
Pete asks Sutton, if he is a vampire. James Marsters, who plays Sutton, played Spike, a vampire, on this show.
''Gyspy Curse'' is a reference to Alexis Denisolf's previous show Angel.
Mentioned in dialogue
In Thor's vision of Asgard, the three masks of a wolf, a ram and a hart reference Wolfram & Hart, from this series.
Mattie calls Carmilla "Amgel-pants".
Mentioned in quoted news article
DVDs displayed in family room.
Mentioned by Ando as the TV show that was a spin-off of Buffy the Vampire Slayer during the Final Chase.
correct response in "Alliterative TV Actresses" category
Mentioned when talking about instances of shows that fast-forward young characters into teenagers
Christian Frates does impressions of Lorne and Wesley.
Jess wanted to name her second child after the show.
Title mentioned and poster shown during Chance the Rapper's monologue rap.
episode clip shown
series is reviewed
Angel is #3. Spike is #1.
Angel gets an honorable mention.
Lorne commenting on the products advertised between acts two and three of Angel: Spin the Bottle (2002) is #10.
Angel, spun off from Buffy the Vampire Slayer (1997), is #6.
The cliffhanger at the end of Angel is #5.
Angel is #5.
Angel is #10.
Fred Burkle is #10.
Angel: Spin the Bottle (2002) is #6.
Angel is #4.
Fred is Infected by a Demon gets an honorable mention.
The body swap between Angel & Marcus in Angel: Carpe Noctem (2001) gets an honorable mention.
Winifred Burkle gets an honorable mention.
Angel: A Hole in the World (2004) gets an honorable mention.
Angel is #8.
Angel, which was canceled because Joss Whedon asked for an early renewal, is #9.
Angel is #3 along with Buffy the Vampire Slayer.
The reunion between Buffy Summers & Angel gets an honorable mention.
Wesley Wyndam-Pryce to Winifred Burkle gets an honorable mention.
The romance between Wesley Wyndam-Pryce & Fred Burkle is #4.
A clip is shown at the beginning of episode.
Cordelia Chase dying in the hospital in Angel: You're Welcome (2004) is #6.
Angel & Cordelia Chase are #8.
Spike is #4.
Winifred Burkle & Wesley Wyndam-Pryce are #5.
Drusilla is #7.
The Senior Partners are #7.
The last kiss between Fred & Wesley is #5.