first depended upon how "Willow" Warren was supposed to be. That is, when Willow first changes into Warren she acts more or less like Willow; in these early scenes Hannigan would act first so that Busch could somewhat mimic her performance. In later scenes when Warren's personality is more prominent Busch would act first. Because of this decision to use both actors, filming the Willow scenes took much longer than usual. In an interview with the BBC, Elizabeth Anne Allen says, "everything had to be so exact." She explains that if Alyson or Adam "gestured or moved their head differently from the other person, they had to do the take over again. So that one scene took us a day and a half to shoot." Anthony Stewart Head was not allowed to touch anything while onscreen for several episodes prior to this one, in order to set up the suspicion that Giles might actually be the First. According to the DVD commentary for this episode, this was apparently quite a pain for all involved. When asked why he set up this misdirection, Joss Whedon says it was "to make people wonder. Just to have a little fun in the sense of pulling a mystery... an exercise, something to spice things up." Whedon wanted to play off the "creepy" idea that "we don't know where the bad guy is, we don't know where he's coming from. Our trusted mentor could be the bad guy." In the DVD commentary, director David Solomon notes that Iyari Limon had to do a lot of kissing in this episode. He says she joked that her lips hurt after having to do long kisses with both Alyson Hannigan and Adam Busch. Cultural references When Kennedy is teleported into Buffy's backyard she says to herself "that was a hell of a thing," a reference to Galaxy Quest, mimicking Tony Shalhoub's understated attitude to being teleported for the first time. When Buffy and Spike are discussing a solution to Spike's chip's malfunctions, Spike says "Who you gonna call?" making a knowing reference to Ghostbusters. Continuity Arc significance What Willow says when she first enters Buffy's backyard with the gun is similar to, though not exactly what Warren says before he shoots Buffy in "Seeing Red". Willow says, "You think you could just do that to me? That I'd let you get away with it?" while Warren says, "You