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
Buffy the Vampire Slayer: The Score disc there is an “alternate version” of the same song; it seems that this particular version has been used in the “Bargaining” episode. There is some confusion in labeling this track as a consequence. iTunes Exclusive Bonus Tracks<br> Rhapsody Exclusive Bonus Track<br> Amazon Exclusive Bonus Track<br> Buffy the Vampire Slayer: The Score Buffy the Vampire Slayer: The Score is a soundtrack album featuring incidental music from the "Buffy the Vampire Slayer" TV series. It is the first "Buffy" CD release which is exclusively dedicated to the TV series' musical score, and features compositions from seasons 2, 3, 4, 5 and