In Wild at Heart, Oz says that he has seen Giles’ record collection, “Don’t scoff, gang. I’ve seen Giles’ collection. He was an animal in his day.” This occured in The Harsh Light of Day. The TV Giles watches in Wild at Heart was first discovered in the same scene.

There’s a Wicca group on UC Sunnydale campus which Willow looks into joining in Wild at Heart. She meets Tara there in Hush, and they bond over the fact that their fellow Wiccans aren’t interested in spells. Amy Madison joins the group in season seven, seen in The Killer in …

Veruca implies in Wild at Heart that when a werwolf is in human form it eventually begins to have memories of its time spent as a wolf, though Oz hasn’t reached that phase yet.

There is a pub on campus at UC Sunnydale, seen in Beer Bad. There is a Welsh flag behind the bar in the pub (the green and white flag with a red dragon on it).

In Beer Bad, Xander says, “How much beer would you say a person needed to consume before they started seriously questing for fire?” Quest for Fire is a movie, made in 1981, about three prehistoric men who search for a new source of fire.

In Beer Bad, Willow refers to Wild Turkey (”I’m pregnant by my stepbrother who’d rather be with my best friend and he’s left me with no place to live and no food except this bottle of Wild Turkey, which I drunk all up”). It is a brand of American bourbon …

In Beer Bad, Xander calls Giles, “Mr I-spent-the-60s-in-an-electric-kool-aid-funky-satan-groove,” referring to Tom Wolfe’s 1967 book The Electric Kool Aid Acid Test, about hippies who take drugs.

The music video Buffy watches in Beer Bad is Luscious Jackson’s video for ‘Lady Fingers’. Jill Cunniff, one of the vocalists for the band, knew Joss Whedon as a child.

The name of Veruca’s band is Shy, but the music is actually perfomed by the real band THC. They play the song ‘Overfire’ in Beer Bad. George Sarah, who can be seen on the piano in Shy’s performances, is actually THC’s songwriter. He collaborated with Anthony Stewart Head on his …

Oz notices Veruca from the band Shy again in Beer Bad, making Willow jealous. Willow says that Veruca “dresses like Faith”.

We see in Beer Bad that Oz missed two classes of Psychology. This is interesting, since Professor Walsh told Buffy in Fear, Itself that if she missed a second class, she’d be kicked out.

Bryan Cuprill, who played Roy in Beer Bad, played the same character in the Buffy episode Where the Wild Things Are. He has also appeared in Legally Blonde 2: Red, White & Blonde, ER, Sabrina, the Teenage Witch, Zoe, Duncan, Jack & Jane and The Drew Carey Show.

Kal Penn, who played Hunt in Beer Bad, also played “Fez Boy” in the Angel episode ‘That Vision Thing‘. He can also be seen in Harold and Kumar Go to White Castle, The Arrangement, Cosmopolitan, Superman Returns, Love Don’t Cost a Thing, All About the Andersons and ER.

Eric Mathany played college student Colm in Beer Bad. He has also been in CSI: Crime Scene Investigation, Family Law, Time of Your Life, Early Edition and Charmed.

Michael Beardsley played an uncredited college student in Beer Bad. He appeared in the Angel episode ‘Sense and Sensitivity’ as an accident onlooker. He had other uncredited roles in Men in Black II, Crazy Beautiful, Dude, Where’s My Car? and The Adventures of Rocky & Bullwinkle.