We get to see some more flashbacks to Angel’s earlier days in the episode 3.10 Amends, only marred by his really bad Irish accent and Tom Selleck-style moustache. We see him …

In 2.02 Are You Now Or Have You Ever Been, we see that Angel was staying at the Hyperion Hotel in 1952. At that time he was a loner, drinking human …

The scene where Darla sires Angel was first alluded to in the episode 1.07 Angel. We see the scene in a flashback for the first time in 2.21 Becoming (Part One). Angel …

While Cordelia is with Skip in 3.11 Birthday, he shows her flashbacks on television screens at the mall. The first shows the kiss from 1.09 Hero when Doyle transfers his visions …

Darla (played by Julie Benz) is seen in Buffy the Vampire Slayer for the final time in 5.07 Fool For Love - in a flashback to the Boxer Rebellion.

A few flashback scenes from Buffy the Vampire Slayer are seen in the opening episode of Angel, 1.01 City of, whilst Doyle is telling Angel the story of his life:

Doyle: …

We find out in the episode 2.07 Darla that it was The Master who sired Darla, in a Virginia colony in 1609. Darla lay dying of syphilis at the time and …

In 5.13 Blood Ties, Dawn has a couple of flashbacks to being confronted by the crazy guys in 5.02 Real Me and 5.09 Listening To Fear. She also remembers Sobek the snake from …

In a flashback to London (1880) in 2.07 Darla, we hear the following exchange:

Drusilla: “No. His head’s too full of you, grandmother.”
Darla: “Stop calling me that.”
Drusilla: “Don’t be cross. …

In season seven’s 7.06 Him, Xander has a happy flashback to being pawed at by the women of Sunnydale in 2.16 Bewitched, Bothered And Bewildered.

Before she moved to Sunnydale, Buffy attended Hemery High in L.A. The school was also the setting of the 1992 Buffy movie. Buffy was expelled from there as she burned …

We find out in 1.15 The Prodigal that Angel’s name before he became a vampire was Liam. He was born in 1727 and was sired by Darla in 1753, making …

We find out in 5.08 Destiny that Spike and Angelus were initially good friends after Dru sired Spike, but it was Spike finding Angelus having sex with Drusilla that put an …

In a flashback to 1880 in 5.08 Destiny, Angelus says to Drusilla,

“Darla and I had a little spat. Her precious master sent for her. You know Darla. Master’s pet.”

He’s …

Buffy’s first watcher, shown in a flashback in 2.21 Becoming (Part One), was played by Richard Riehle. His name isn’t mentioned, but the Season Two Script Book clarifies that his name …

When Angel first met Buffy in 1.01 Welcome To The Hellmouth, he said that he thought she’d be taller, implying that he’d never seen her before. In 2.21 Becoming (Part One), we …