The most likely candidates are Emily and Daisy Head, the daughters of Anthony Head, who played Buffy's mentor, Rupert Giles.

Sarah Michelle Gellar has revealed that children of the original Buffy the Vampire Slayer cast members came in to audition ...

In “One For The Road,” Sam Malone (Ted Danson) was this close to running off one last time with Diane Chambers (Shelley Long) ...