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).
82 acting credits
Acting · 82
The Simpsons
1989
The Daily Show
1996
American Dad!
2005
Watch What Happens Live with Andy Cohen
2009
The Kelly Clarkson Show
2019
How I Met Your Mother
2005
Late Show with David Letterman
1993
King of the Hill
1997
Dancing with the Stars
2005
Buffy the Vampire Slayer
1997
Rugrats
1991
Jimmy Kimmel Live!
2003
Veronica Mars
2004
Robot Chicken
2005
Angel
1999
That '70s Show
1998
Touched by an Angel
1994
The Ellen DeGeneres Show
2003
Late Night with Conan O'Brien
1993
The Tonight Show with Jay Leno
1992
The Wild Thornberrys
1998
MTV Movie & TV Awards
1992
Sofia the First
2013
Beat Bobby Flay
2013
The Reichen Show
2005
American Pie
1999
Picket Fences
1992
The $100,000 Pyramid
2016
The Bonnie Hunt Show
2008
Fancy Nancy
2018
Hollywood Game Night
2013
Penn & Teller: Fool Us
2011
The Late Late Show with Craig Kilborn
1999
Solo Mio
2026
The Torkelsons
1991
Entertainment Tonight
1981
The Megan Mullally Show
2006
Doogie Kamealoha, M.D.
2021
American Pie 2
2001
American Reunion
2012
American Wedding
2003
Roseanne
1988
The Gong Show
2017
The Goode Family
2009
Free Spirit
1989
My Stepmother Is an Alien
1988
Outmatched
2020
Date Movie
2006
Pepsi Smash
2003
100 Deeds for Eddie McDowd
1999
Boys and Girls
2000
I Love the '70s: Volume 2
2006
Kim Possible
2019
Flora & Ulysses
2021
Star Plates
2016
Fancy Nancy: Fancy It Yourself
2019
Farce of the Penguins
2006
Playboy Mansion Parties Uncensored
2001
Office Race
2023
Teen Choice Awards
1999
Adorableness
2021
Dead Man on Campus
1998
The Stranger Beside Me
1995
Do You Take This Man
2017
Buffy the Animated Series
2008
American Pie: Revealed
2004
You Might Be the Killer
2019
Outrageous Pumpkins
2020
For My Daughter's Honor
1996
Dancing with the Stars Official Podcast
2025
Abducted: The Mary Stauffer Story
2019
Love, Wedding, Marriage
2011
Beyond the City Limits
2001
Girl Scout Cookie Championship
2020
More Business of Being Born
2011
Hayley Wagner, Star
1999
A Case for Life
1996
American Pie: Beneath the Crust Vol. 2
—
Impure Thoughts
1986
How I Met The Robin
—
Dodie & Cheryl Get Hitched
—
Man of the House
2018