Willow tells Tara that she had “a bad birthday party pony thing” when she was four years old. She now has a fear of ponies. And horses, which she sees as “really big ponies”.

In Where the Wild Things Are, we see that Riley keeps condoms in the drawer by his bed. Some appear to be made by Durex. This is the first time condoms have been shown on the show, though Anya mentioned them to Xander in The Harsh Light of Day (”some …

Casey McCarthy, who played the curly-haired Julie in Where the Wild Things Are, was Angela Sutton in Daredevil. She has also been in The Last Shot and Charity.

Sarah Michelle Gellar was away shooting the Angel episode ‘Sanctuary‘ during the filming of Where the Wild Things Are which is why we see so little of her in that episode.

James M. Connor played the Initiative scientist in Where the Wild Things Are, New Moon Rising and Restless. He played Jack in The Yard Sale, and was Randall’s Best Man in About Schmidt. He has also been in Gilmore Girls, Scrubs, The X Files, and The Drew Carey Show.

Danielle Pessis, who played Christie in Where the Wild Things Are, played Rachel in MTV’s Undressed and R.J. in Angel in Training.

Neil Daly played Mason in The I in Team and Where the Wild Things Are. He has also been in Brink and Flashpoint.

Kathryn Joosten, who played Genevieve Holt in Where the Wild Things Are, played Mrs. Landingham, secretary to the President (played by Martin Sheen) in The West Wing. She has appeared in Dharma and Greg, Becker, Ally McBeal, The X Files, Providence, Seinfeld, Charmed, Joan of Arcadia, Scrubs and Frasier. Kathryn …

We see in Superstar that Spike now has to buy blood from the butcher, just as Angel used to (such as in The Prom).

In Superstar, Jonathan mentions the clock tower and the gun, referring to the time he was going to kill himself before Buffy stopped him in Earshot.

When the world returns to normal in Superstar, one of the Jonathan posters on a wall changes into a poster of Oz’s band, Dingoes Ate My Baby.

In Superstar, Jonathan claims that Adam’s power source is a reservoir of uranium 235 in his chest. This information is actually true and helps Buffy to defeat her foe in Primeval.

In Superstar, Jonathan claims he was presented with the Class Protector award by Buffy, except he wasn’t really. Buffy got the award in The Prom - a sparkly toy umbrella.

In Superstar, when referring to Jonathan’s fame, Buffy says, “I’m not entirely sure that we can trust our memories”, which is a little reference to the fifth season, in which the Scoobies memories are changed to accommodate Dawn.

The movie Being Jonathan Levinson, mentioned in Superstar, is clearly based on Being John Malkovich.