Anya attempts to regain her powers in Doppelgängland and accidentally calls vampire Willow to Sunnydale.

In Restless, when we see a group of people crowding round Xander’s ice cream truck, there’s a girl standing to the left of the screen who really (and REALLY) looks like Michelle Trachtenberg (Dawn). Michelle was not yet a member of the cast of Buffy, but Joss had mentioned in …

Willow mentions Amy Madison in The Wish. Amy told Willow she saw Cordy in the mall. Amy was previously seen in The Witch and Bewitched, Bothered and Bewildered.

When vampire Willow and Xander walk to the Bronze in The Wish, a vampire is drinking from a girl who looks like Faith.

Willow and Xander are the Master’s favourite vampire lackeys in The Wish. This shows that they would be more powerful (yet evil) without Buffy, but both live in the Slayer’s shadow in real-life. Conversely, we see how Buffy could have been without the support of her friends. She is hardened …

Alyson Hannigan got the Buffy make-up team to dress her as a vampire again one Halloween.

Todd McIntosh, Buffy’s make-up supervisor, said in the October 1999 issue of Entertainment Weekly that his favourite episode was The Wish.

In the alternative universe in The Wish, Buffy’s old season one foe, The Master, is ruling over Sunnydale.

The following dialogue was cut from Amends:
Joyce: “You know, honey, I was thinking – maybe we should invite Faith to spend Christmas Eve with us.”
Buffy: “I’ll ask her. Worst she can do is – well, the worst she can do is serious bodily harm, but she’ll probably just say no.” …

In Lover’s Walk, Oz reveals that he has heightened werewolf senses even when he’s in human form - he can smell Willow from afar.

In Lover’s Walk, Xander says to Buffy, “You and I are going to be manning the drive-through window side by side.” He’s not far wrong. Buffy briefly worked at a burger joint called Doublemeat Palace in season six, and Xander worked in various fast-food related positions in season four.

Xander gets smashed in the head with a microscope in two episodes: Lover’s Walk and Bad Eggs.

Xander tells Willow in Lover’s Walk, “Have you forgotten that I tend to have bad luck with these sorts of spells?” This is a reference to the love spell cast by Amy Madison in Bewitched, Bothered and Bewildered.

In the season four episode The Initiative, Spike tells Willow he was once tempted to bite her: “Remember last year? You had on that fuzzy pink number with the lilac underneath.” He’s referring to the events of the episode Lover’s Walk.

After leaving Sunnydale in Becoming (Part 2), Spike and Drusilla went to Brazil, which is where she left him for a chaos demon. In Lover’s Walk, Spike claims chaos demons are, “All slime and antlers” - which we discover is literally true when we finally see one in Fool for …