
The great Eddie Money sounds as love-struck as Spike in this atmospheric video from 1982 for "I Think I'm in Love.





In an interview they explain how they came to produce the theme:
"They [the Buffy production staff] had hired some famous theme song composer to come up with a theme and they didn’t like the one he came up with so they were kind of on a low budget, and asked local bands to come up with theme song ideas." [1]
In the DVD commentary for "Welcome to the Hellmouth", Whedon explained that part of his decision to go with Nerf Herder's theme was that Alyson Hannigan had made him listen to the band's music.
In April 2003, Nerf Herder appeared as the musical guest in the final-season Buffy episode "Empty Places" – the very last band to play at The Bronze. Their special connection to the series was further acknowledged by a bit of dialogue, as "Rock City News" played in the background:
Kennedy: What kind of band plays during an apocalypse?
Dawn: I think this band might actually be one of the signs.
Man, I hate playing vampire towns.
In one scene, the bouncer refers to Spike as "a Billy Idol wannabe," and Buffy starts to say that Billy Idol actually stole the look from him (implying Spike had told her this in conversation at some point). In Season Five's Fool for Love, Spike's resemblance to Billy Idol was depicted (though not acknowledged in dialogue) during his flashback fight with the Slayer Nikki Wood in 1977, at which time Spike's attire and hair mimicked Idol almost perfectly, several years before Idol's fame.