Sometime after this episode aired and before I watched Buffy, I was watching a movie with my daughter who was a teenager by then, and this old song popped up in the movie. When the song started, my daughter said that she liked this song. I was shocked that she'd even heard it, much less liked it. i didn't ask her how she knew about the song or where she'd heard it.
It wasn't until years later when I finally watched Buffy that I realized this was where she'd heard I only Have Eyes For You. I laughed because Buffy was the only thing that could have gotten her to listen to a 1950's doo wop song.