Ryan Raddatz, who played Buffy’s annoying co-worker Todd in As You Were, has been in First Daughter (which stars Marc Blucas), A Mighty Wind, The Joe Schmo Show, Grounded for Life, The Andy Dick Show, Even Stevens and The Amanda Show.

In Older and Far Away, Spike is still bruised from the beating Buffy gave him in Dead Things.

In Older and Far Away, Xander refers to the events of Once More, With Feeling when he says, “sometimes we do something that seems like a good idea at the time, like, say, invoke the power of a musical amulet?”

Halfrek poses as the High School’s guidance counsellor in Older and Far Away. Buffy gets this job for real in season seven.

Xander and Anya mention slug candles in Older and Far Away, first seen in the Magic Box in Life Serial:
Anya: “Do you think we should set up lots of candles for Buffy’s party tomorrow?”
Xander: “Not if they’re that horrible slug kind you keep trying to unload.”
Anya: “I don’t know why …

Spike and Halfrek recognise each other in Older and Far Away - she even calls him William. This is a reference to the fact that Kali Rocha, who plays Halfrek, played Spike’s love interest, Cecily Adams, in Fool For Love. Cecily seems to have been made into a vengeance demon …

In Older and Far Away, we learn that Willow has joined a group called ‘Spellcasters Anonymous’ (”We’re still looking for a better name”). How many magic-addicted people are there in Sunnydale?

Buffy celebrates her 21st birthday in Older and Far Away, meaning she can now legally drink alcohol, though we saw her drinking in several previous episodes (Reptile Boy, Beer Bad, Life Serial, Dead Things). Her presents include a battery operated back massager from Willow, a stolen leather jacket from Dawn …

Elizabeth Cazenave, who played Dawn’s teacher in Older and Far Away, also appeared in The Mothman Prophecies as a Bellhop.

Ryan Browning, who played Richard in Older and Far Away, has been in Stealing Sinatra, Rent Control, Extreme Days, The Smokers, The Intern and Blink of an Eye.

Willow tells Tara in Dead Things that she has done no spells for thirty-two days. She gave up magic after endangering Dawn in Wrecked. Willow had a small lapse in Doublemeat Palace after Amy gave her a spell though Willow didn’t want it.

In Dead Things, Jonathan uses his magic bone, which first appeared in the episode Life Serial. He also uses his shape-shifting spell from Life Serial to turn himself into Katrina.

In Dead Things, Buffy believes that she’s killed a human, which echoes the earlier episode Ted, where she killed her mother’s boyfriend, who turned out to be a robot.

In Dead Things, Buffy says of her bedroom, “I think the New Kids On The Block posters are starting to date me.” She’s referring to the American boy band, who formed in 1984, and split up by 1994.

Bernard Addison, who played a cop in Dead Things, appeared in the Buffy spin-off show Angel as “Root Monster” in the episode ‘Couplet‘. He also played a waiter in a couple of episodes of Frasier.