Skip to main content
▶ WHOPLAYSNOW
Alyson Hannigan

Alyson Hannigan

Alyson Lee Hannigan (born March 24, 1974) is an American actress and television presenter. She is best known for her roles as Willow Rosenberg in the television series Buffy the Vampire Slayer (1997–2003), as Lily Aldrin in the sitcom How I Met Your Mother (2005–2014) for which she won a People's Choice Award in 2009, and as Michelle Flaherty in the American Pie film series (1999–2012). Since 2016, Hannigan has hosted the television show Penn & Teller: Fool Us. She also provides the voice of Claire Clancy in the Disney Junior animated series Fancy Nancy (2018–present).

Known for

Solo Mio
Solo Mio
2026 • Meghan
Office Race
Office Race
2023 • Pat
Flora & Ulysses
Flora & Ulysses
2021 • Phyllis
Abducted: The Mary Stauffer Story
Abducted: The Mary Stauffer Story
2019 • Mary Stauffer
You Might Be the Killer
You Might Be the Killer
2019 • Chuck
Kim Possible
Kim Possible
2019 • Dr. Ann Possible
Man of the House
2018 • Jessie
Do You Take This Man
Do You Take This Man
2017 • Rachael

Full filmography

Solo Mio
Solo Mio
2026 • Meghan
View movie
Kim Possible
Kim Possible
2019 • Dr. Ann Possible
View movie
American Reunion
American Reunion
2012 • Michelle Levenstein
View movie
Farce of the Penguins
Farce of the Penguins
2006 • Hottie Penguin (voz)
View movie
Date Movie
Date Movie
2006 • Julia Jones
View movie
American Wedding
American Wedding
2003 • Michelle Flaherty
View movie
American Pie 2
American Pie 2
2001 • Michelle Flaherty
View movie
Hayley Wagner, Star
Hayley Wagner, Star
1999 • Jenna Jakes
View movie
American Pie
American Pie
1999 • Michelle Flaherty
View movie
Impure Thoughts
Impure Thoughts
1986 • Patty Stubbs
View movie
Dodie & Cheryl Get Hitched
Unknown year • Cheryl Crum
View movie
Alyson Hannigan – Biography, Known For & Filmography