The following is from 1.07 Angel:

Buffy: “And ‘A’ doesn’t even stand for ‘Angel’ for that matter, it stands for… ‘Achmed’, a charming foreign exchange student, so that whole fantasy part has …

In 1.20 War Zone one of the women working at the brothel Madam Dorian’s is from Oden Tal. In 1.13 She we learned that the women from Oden Tal can incinerate other …

In 5.12 You’re Welcome, Angel finds Cordelia watching the video tape of Doyle that was made in season one and was last seen in the episode 1.09 Hero in which Doyle died.

In 5.18 Intervention, Buffy says, “Glory’s Key-sniffing snake was about here when I killed it. It was headed back to her.” This is a reference to the snake-demon Sobek in 5.08 Shadow, …

When Willow drains Rack of his power in 6.21 Two To Go, she says:

“I just wanna take a little tour”.

He said the same thing to her in 6.10 Wrecked, before …

Buffy says in 4.13 The I In Team that Ethan Rayne:

“worships chaos and tries to kill you.”

Rayne attempted to kill her and Giles in 2.08 The Dark Age using the demon …

Buffy’s mother Joyce met Hank Summers in her freshman year of college, when Joyce didn’t have a date and Hank did. She told this story to Buffy in 1.12 Prophecy Girl.

Buffy: …

Willow and Xander are the Master’s favourite vampire lackeys in 3.09 The Wish. This shows that they would be more powerful (yet evil) without Buffy, but both live in the Slayer’s …

In 7.16 Storyteller, Andrew mentions that Xander broke up with Anya on their wedding day (seen in 6.16 Hell’s Bells) and he reveals that a year has passed since then. This coincides …

When Buffy tells Tara’s family that “we’re family” in the episode 5.06 Family, both Joyce and Riley are missing. Both characters left the show later that season.

In 5.10 Into The Woods, Spike says “Ain’t love grand?” which he also says to Dawn in 6.19 Seeing Red.

Drinking alcohol in Buffy the Vampire Slayer has always been frowned upon, though the rules were relaxed slightly as the Scoobies got older. The general rule is: if you have …

We discover in 1.03 The Witch that Xander’s full name is Alexander Harris, when the Scoobies realised he had checked out witchcraft books from the library.

When Buffy looks at the family photograph of her as a little girl in 6.17 Normal Again, it is the same child (Alexandra Lee) who portrayed young Buffy in season five’s …

In 6.21 Two To Go, Willow says to Buffy:

“I get it now. The Slayer thing really isn’t about the violence. It’s about the power.”

The episode 7.01 Lessons begins and ends …

D’Hoffryn predicted Anya’s death in 7.05 Selfless. After he killed Halfrek, Anya told him, “You should have killed me.” D’Hoffryn replied, “Be patient, all good things in time.”

In season seven, Joss Whedon stated that he wanted season seven to go “back to the beginning”. A small bit of continuity is the title of the episode 7.14 First Date, …

In 5.12 Checkpoint, the Scoobies reference several previous episodes. Willow and Tara tell Phillip about the “ball of sunshine” spell they were working on in 5.11 Triangle. Giles mentions the Council’s “arcane …

The Alpert tomb is a memorable tomb which can often be spotted when the Scoobies are wandering through Sunnydale’s graveyard. The tomb is named after Buffy producer Marc David …

Buffy references the ex-Principal of Sunnydale High in 7.06 Him when she says to R.J:

“I was kinda juggling some stuff when I was in high school, too. Which was also …