"Sex Ed" is the fourth episode of the seventh season of the American comedy television series The Office, and the show's 130th episode overall. Written and directed by Paul Lieberstein, the episode aired on NBC in the United States on October 14, 2010. The episode features the return of several recurring characters, most notably Melora Hardin as Jan Levinson, Linda Purl as Helene Beesly, and Nancy Carell as Carol Stills. Actresses Amy Pietz and Amy Ryan — who portray Donna Newton and Holly Flax — only make vocal cameos, though Ryan is credited as a starring role.