Alyson Hannigan
Acting
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).
TV Shows(52)
Dancing with the Stars Official Podcast
Self
2025
Doogie Kamealoha, M.D.
Dawn
2021
Adorableness
Self
2021
Outrageous Pumpkins
Self - Host
2020
Girl Scout Cookie Championship
Self - Host
2020
Outmatched
Beth
2020
The Kelly Clarkson Show
Self
2019
Fancy Nancy: Fancy It Yourself
Nancy
2019
Fancy Nancy
Claire Clancy (voice)
2018
The Gong Show
Self - Judge
2017
Star Plates
2016
The $100,000 Pyramid
Self
2016
Beat Bobby Flay
Self
2013
Hollywood Game Night
Self
2013
Sofia the First
(voice)
2013
Penn & Teller: Fool Us
Self - Host
2011
Watch What Happens Live with Andy Cohen
Self - Guest
2009
The Goode Family
2009
The Bonnie Hunt Show
Self
2008
Buffy the Animated Series
Willow Rosenberg
2008
The Megan Mullally Show
Self - Guest
2006
I Love the '70s: Volume 2
Self
2006
The Reichen Show
Self
2005
How I Met Your Mother
Lily Aldrin
2005
Dancing with the Stars
Self - Contestant
2005
Robot Chicken
Steelheart (voice)
2005
American Dad!
Lexie (voice)
2005
Veronica Mars
Trina Echolls
2004
The Ellen DeGeneres Show
Self
2003
Pepsi Smash
Self - Host
2003
Jimmy Kimmel Live!
Self
2003
100 Deeds for Eddie McDowd
1999
Angel
Willow Rosenberg
1999
Teen Choice Awards
Self
1999
The Late Late Show with Craig Kilborn
Self - Guest
1999
The Wild Thornberrys
Gerda (voice)
1998
That '70s Show
Suzy Simpson
1998
Buffy the Vampire Slayer
Willow Rosenberg
1997
King of the Hill
Stacey Gibson (voice)
1997
The Daily Show
Self - Guest
1996
Touched by an Angel
Cassie Peters
1994
Late Night with Conan O'Brien
Self - Guest
1993
Late Show with David Letterman
Self - Guest
1993
Picket Fences
Peggy Patterson
1992
MTV Movie & TV Awards
Self - Presenter
1992
The Tonight Show with Jay Leno
1992
The Torkelsons
Samantha
1991
Rugrats
Cynthia P.I. (voice)
1991
The Simpsons
Melody Juniper (voice)
1989
Free Spirit
Jessie Harper
1989
Roseanne
1988
Entertainment Tonight
Self
1981
Movies(29)
Solo Mio
Meghan
2026
Office Race
Pat
2023
Flora & Ulysses
Phyllis
2021
Abducted: The Mary Stauffer Story
Mary Stauffer
2019
You Might Be the Killer
Chuck
2019
Kim Possible
Dr. Ann Possible
2019
Man of the House
Jessie
2018
Do You Take This Man
Rachael
2017
American Reunion
Michelle Levenstein
2012
More Business of Being Born
Self [Part 2,3]
2011
Love, Wedding, Marriage
Courtney
2011
Farce of the Penguins
Hottie Penguin (voz)
2006
Date Movie
Julia Jones
2006
American Pie: Revealed
Self
2004
American Wedding
Michelle Flaherty
2003
Beyond the City Limits
Lexi
2001
American Pie 2
Michelle Flaherty
2001
Playboy Mansion Parties Uncensored
Self
2001
Boys and Girls
Betty
2000
Hayley Wagner, Star
Jenna Jakes
1999
American Pie
Michelle Flaherty
1999
Dead Man on Campus
Lucy
1998
For My Daughter's Honor
Kelly
1996
A Case for Life
Iris
1996
The Stranger Beside Me
Dana
1995
My Stepmother Is an Alien
Jessie Mills
1988
Impure Thoughts
Patty Stubbs
1986
Dodie & Cheryl Get Hitched
Cheryl Crum
American Pie: Beneath the Crust Vol. 2
Self