This post is dedicated to Julie Powell, whom I'd like to thank for posting very interesting comments in the previous entry. Julie, I know you're a fan of Buffy - did you imagine one second that one of the guest actors would play your own character? So odd.
In 2000, Amy Adams appeared in the fifth season of "Buffy" as Beth Maclay, in the sixth episode called "Family". The storyline is about Tara's brother Donny, her father and her cousin Beth (Amy Adams) visiting her to bring her back home, since she would have a demon inside that would unleash in her twentieth anniversary.
This episode aired on November 7th, 2000 in the US. It's certainly not Amy's best part but hey, at least she can say that she's part of the "Buffy" legacy!