Alyson Hannigan 1989, her first regular role on a TV series came when she was cast in the short-lived ABC sitcom "Free Spirit". As a teenager, Hannigan babysat for the children of her future "How I Met Your Mother" costar, Bob Saget. In 1997, Hannigan was cast to play Willow Rosenberg, Buffy Summers' best friend, on the television series "Buffy the Vampire Slayer". The show became a success, and Hannigan gained recognition, subsequently appearing in several films aimed at teenaged audiences, including "American Pie" (1999), "Boys and Girls" (2000), "American Pie 2" (2001), and "American Wedding" (2003). She also had a guest
Watcher (Buffy the Vampire Slayer) and John Travers (""), Yanna Narvik (watched over the Slayer, Sophie Carstensen in "Pretty Maids All in a Row"), Marie-Christine Fontaine (watched Slayer, Eleanor Boudreau in "Pretty Maids All in a Row"), Diana Dormer (the name given to Faith's first Watcher in "Go Ask Malice"). Watcher (Buffy the Vampire Slayer) In the fictional Buffyverse established by the television series "Buffy the Vampire Slayer" and "Angel", a Watcher is a member of a secret organization, the Watchers' Council, which seeks to prepare the Slayer to fight demonic forces. A notable example of a Watcher is "Buffy" main character Rupert Giles. Watchers