In Fear Itself, Willow mentions the party “last Friday”. She’s probably referring to the party at Wolf House in The Harsh Light of Day.

In The Harsh Light of Day, Buffy tells Parker that she nearly drowned, referring to Prophecy Girl. Buffy also reveals to Parker that she has a scar from when Angel fed from her in Graduation Day Part Two. She says it was an “angry puppy”.

In Graduation Day (Part 2), the Mayor turned into a giant snake-demon. His Ascension is referenced in several future episodes. In The Harsh Light of Day, Harmony and Willow discuss the “big snake” that threatened Sunnydale High in Graduation Day Part Two. It was during the confusion at the end …

At some point between Graduation Day (Part 2) and The Harsh Light of Day, the gang (except for Xander) have found out that Angel was in L.A. Buffy gives the Gem of Amarrah to Oz to take to her ex-boyfriend. We see their adventures in the Angel episode ‘In the …

Oz wears a red ‘Dragon Inn’ t-shirt in The Harsh Light of Day, which can also be seen in some of his season four promotional photos.

When Anya knocks on his door in The Harsh Light of Day, Xander just says “come in”. This isn’t too bright considering she could have been a vampire.

Devon (played by Jason Hall) made his final apperarance on Buffy the Vampire Slayer in The Harsh Light of Day. The character was mentioned again in a couple of episodes (Something Blue and New Moon Rising) but never seen again.

Joss said the following at the Posting Board about the scene in The Freshman when Buffy’s kicked out of class: “As to the Prof in Buffy ep 1, I freely confess that he’s based on an old prof of mine, Joe Reed, who kicked my friend David out of the …

Joss Whedon had the following to say about Buffy and Riley’s controversial relationship: “Some people think they’re just too cute and fluffy. Well, maybe I think it would be nice for Buffy to have an easy, stable relationship for once that doesn’t cause her any grief, doesn’t become dark and …

Joss Whedon said the following at the Posting Board about Sarah and Eliza playing each others’ characters in Who Are You?: “The girls watched vid of each other extensively, trying to ape each other’s movements without falling into parody.”

Joss Whedon joked at the Posting Board:
“Yes, the Buffy Angel romance is based on something from my own life. A very similar situation, except obviously I’m not a vampire, and the girl was a little taller, and her name was Emily, and a year older than me, and she didn’t …

Many people believed that the scenes in Restless where Willow walks between the red curtains was a reference to Twin Peaks. At the Posting Board, Joss said the following: “…just wanted to mention: the red curtains weren’t actually a Twin Peaks homage — in fact I thought of cutting them …

At the Posting Board in August 2000, Joss said, “a woman came up to me after the panel (at a convention) to say “Thank you for Tara”. But I was being herded away and I didn’t get to respond, I shouted “You’re Welcome” but I don’t know if she heard, …

In Living Conditions, Buffy refers to The Grotto, where she is going for coffee, which is probably on campus.

In Living Conditions, Kathy plays Cher’s ‘Believe’ over and over:
Kathy: “This song is super fun. Isn’t it?”
Buffy: “You bet. It just gets funner and funner every time you play it.”
In the original script the song was Mariah Carey’s ‘Butterfly’.