In her letter to Dawn in End of Days, Buffy says, “I promised once to show you this beautiful world and I’m going to do everything I can to make that happen.” She made this promise in Grave.

We find out in End of Days that Giles has a thing for Jaffa Cakes. They’re made by Jacobs and consist a spongey base, covered in chocolate and filled with a kind of orange jelly.

David Boreanaz returns to Sunnydale in End of Days for the first time since season five’s Forever. The season finale of Angel aired the week previously, which left David free to return to Sunnydale.

Spike tells Buffy that she’s “a hell of a woman” in Touched. Riley said the same thing to her in As You Were.

The bomb which threatens the lives of Faith and the potential Slayers in the sewer in Touched, is the second explosion in season seven. Caleb planted a bomb in the Watcher’s Council In Never Leave Me. The countdown of the sewer bomb continues over the ‘executive producers’ credit screen.

The song that plays while everyone is having sex in Touched is ‘It’s Only Love’ by Heather Nova from the album ‘South’.

We learn in Touched that Dawn has been reading up on magic (”Hey, I’ve been reading this old Turkish spell book.”) This ties in with Conversations with Dead People when she perfomred a spell to help her mother.

Lisa Ann Cabasa, who played an injured girl in Touched, played Tinga/X5-656/Penny Smith in Dark Angel and appeared in One Night Stand, Beverly Hills, 90210 and David Lynch’s Wild at Heart.

Lance E. Nichols, who played the man who Buffy kicked out of the house in Touched. He has also been in Frailty, Last Rites, Snake Eyes, Serial Killer, Convicts, Cold Steel, The Drew Carey Show, NYPD Blue, Everybody Loves Raymond, 3rd Rock from the Sun, The Fresh Prince of Bel-Air, …

In Empty Places, Giles says Andrew has a pan flute which he can use to summon demons. We saw this in Life Serial.

In Empty Places, Faith says of Anya, “Yeah, whenever she starts talking about getting all sweaty with Xander like that I just remind her I had him first. Shuts her right the hell up.” Faith and Xander had sex in The Zeppo.

The photo that Buffy looks at when she visits her office in Empty Places is the same one she looked at in Primeval. It is also similar to a photo she looked at in Dead Man’s Party and Halloween.

The way Willow alters the cop’s thoughts in Empty Places is reminiscent of Amy altering the teacher’s mind in Bewitched, Bothered and Bewildered. Why does Willow use magic to get the police files anyway? It’s the kind of stuff she’d have got by computer hacking in the early days.

Caleb’s vineyard in season seven is called ‘Shadow Valley’. The name can be seen as the opposite to ‘Sunnydale’.

In Dirty Girls, Molly reminds Andrew that he’s not supposed to be telling stories anymore. Buffy demanded this in Storyteller after he kept lying about the murder of Jonathan.