Alyson Hannigan

Alyson Hannigan is an American actress born in Washington, D.C. on March 24th, 1974. She is best known for playing the role of nerdy witch girl Willow Rosenberg on the 1997-300 television series Buffy the Vampire Slayer. She appeared in 144 of the 145 aired episodes of the series. She also provided the voice for the character in the Buffy the Vampire Slayer video game and the undeveloped Buffy the Vampire Slayer animated series. Hannigan reprised the role of Willow for three episodes of the Buffy spin-off series Angel. She appeared in "Disharmony", "There's No Place Like Plrtz Glrb" and "Orpheus"

Notes & Trivia

 * Outside of her work on Buffy, Hannigan is also remembered for her role as Michelle Flaherty, the nerdy band camp girl from the American Pie films. She also played Lily Aldrin in the 2005 sit-com How I Met Your Mother.