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
Faith (Buffy the Vampire Slayer) looked to Faith herself in order to overcome his fear of writing such a popular character, "She's not hesitant and in a lot of ways, I took a lot of inspiration from the character itself in terms of creative process — to really go for it and be strong in my choices". Faith (Buffy the Vampire Slayer) Faith is a fictional character created by Joss Whedon for the television series "Buffy the Vampire Slayer". Played by actress Eliza Dushku, Faith was introduced in the third season of "Buffy" and was a focus of that season's overarching plot. She returned for