Alyson Hannigan (born March 24, 1974) is an American actress who plays Lily Aldrin in the CBS sitcom How I Met Your Mother. She is also known for her previous roles as Willow Rosenberg on the television series Buffy the Vampire Slayer and flautist Michelle Flaherty in the American Pie film series. Career Hannigan's first major film role was in My Stepmother Is an Alien, a science fiction comedy released in 1988; one of her co-stars in the film was actor Seth Green, who would later join her in the regular cast of Buffy as her on-screen boyfriend. Throughout most of the early 1990s, she appeared in commercials and supporting roles on television shows, including Picket Fences, Roseanne and Touched by an Angel. In 1997, Hannigan was cast to play Willow Rosenberg, Buffy's best friend, on the television series Buffy the Vampire Slayer. The show became a big success, and Hannigan gained recognition, subsequently appearing in several notable films aimed at teenage audiences, including American Pie, American Pie 2, Boys and Girls, and American Wedding. By the time Buffy had ended in 2003, Hannigan was earning a $250,000 salary for each episode. She also had a guest spot on the Buffy spin-off, Angel, portraying her role of Willow in a few episodes (including most notably "Orpheus", during the fourth season of Angel and the seventh season of Buffy), but none after Buffy finished production. In early 2004, Hannigan made her West End debut, starring in a stage adaptation of When Harry Met Sally... at the Theatre Royal Haymarket, opposite Luke Perry. In 2005, she returned to starring in a regular television series, appearing in the hit comedy, How I Met Your Mother, as Lily, and also playing a recurring guest role on Veronica Mars as Trina Echolls. In February 2006, Hannigan starred as Julia Jones in Date Movie, a parody on romantic comedies. Filmography Year Title Role 1988 My Stepmother Is an Alien Jessie Mills 1997-2003 Buffy the Vampire Slayer Willow Rosenberg 1998 Dead Man on Campus Lucy 1999 American Pie Michelle Flaherty 2001 American Pie 2 Michelle Flaherty 2003 American Wedding Michelle Flaherty-Levinstein 2005 Veronica Mars (TV series) Trina Echolls 2005- present How I Met Your Mother (TV series) Lily Aldrin 2006 Date Movie Julia Jones Source http://en.wikipedia.org/wiki/Alyson_Hannigan Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.