In Listening to Fear, Willow says, “I don’t want to be the one who finds the bodies anymore”, referring to the episodes Real Me (when she tripped over the body of Mr. Bogedy, the magic shop owner) and Doomed (when she found a dead student in a bed).

The Scoobies do research in the UC Sunnydale library in Listening to Fear, which we saw first in The Freshman.

Joyce reveals to Buffy in the episode Listening to Fear that she knows Dawn is not her daughter. She asks Buffy to take care of her, no matter what, which leads to Buffy’s determination at the end of season five that nothing should happen to her sister:
Joyce: “That Dawn… she’s …

The titles of both the preceding and the following episode are referenced in Listening to Fear. When the body is found at the crash site, Giles suggests exploring further - going “into the woods”. Later on, Joyce tells Dawn she’s nothing but a “shadow”.

Tara makes up her own star constellations in Listening to Fear including the Big Pineapple, Short Man Looking Uncomfortable, Moose Getting A Sponge Bath and Little Pile’O'Crackers.

Willow stakes two vampires in Listening to Fear, making Buffy’s role as the one and only vampire Slayer a little more obsolete.

The episode Shadow begins the day after the events of the previous episode, Fool For Love. There we saw Joyce packing for her trip to the hospital.

We see Spike stealing some of Buffy’s underwear in the episode Shadow and in Listening to Fear Spike steals photographs of the Slayer. In Crush, we see he has a whole collection of Buffy-related articles, including photos, clothing and drawings of the Slayer. Buffy blames Dawn in Crush for her …

Joyce has a CAT scan (CAT stands for Computed Axial Tomography) in Shadow. She is diagnosed with a low-grade Glioma in the left hemisphere of her brain. This is a tumour of supporting tissue in the brain. They’re slow growing so you can have one for many years without symptoms.

We first see Glory’s apartment for the first time in the episode Shadow. From the outside it looks quite like the building where Anya and Xander live. Glory’s minions call her many names including: “Shiny Special One”, “Your Terrifically Smooth One”, “Your Creamy Coolness”, “Silky and Effervescent Glorificus” and “Your …

Megan Gray, who played Sandy in Doppelgängland, Family and Shadow, played Emma Jones in Dawson’s Creek. She has also been in Welcome 2 Ibiza, Picking Up Chicks with Harland Williams and Giving It Up.

William Forward, who played Dr Isaacs in Shadow, has appeared in Beautiful, Gilmore Girls, The X Files, Babylon 5 (as Lord Refa) and Beverly Hills, 90210.

Kevin Weisman, who played Glory’s minion Dreg in season five, played Marshall J. Flinkman in Alias. He has also appeared in Lip Service, Gone in Sixty Seconds, The Rock, Charmed, Two Guys, a Girl and a Pizza Place, Felicity, The X Files, Roswell, The Drew Carey Show, ER and Frasier. …

The episode title Fool For Love is also the title of a 1985 movie starring Sam Shepard and Kim Basinger.

The line about “bloody awful poetry” in Fool For Love is taken from The Smith’s song ‘Frankly Mr. Shankly’ from their The Queen is Dead LP.