With Buffy the Vampire Slayer said to be returning, we look back at the best episodes of the game-changing series.

Michelle Trachtenberg's Dawn Summers was a vital part of Buffy the Vampire Slayer. Here are the five best episodes focusing on Buffy's younger sister.

When the series shifted from the WB to UPN for its sixth season, fans were treated to one of its most innovative episodes: the musical Once More With Feeling. Most prominently for Trachtenberg, whose ballet talents were showcased that week, she opens the episode’s coda, “Where Do We Go From Here?,” singing the opening title line a cappella.