Alyson Hannigan
Acting • Born 1974-03-24
Biography
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).
Filmography
84 credits
American Pie
Movie • 1999
Michelle Flaherty
Dodie & Cheryl Get Hitched
Movie
Cheryl Crum
Date Movie
Movie • 2006
Julia Jones
American Pie 2
Movie • 2001
Michelle Flaherty
American Wedding
Movie • 2003
Michelle Flaherty
My Stepmother Is an Alien
Movie • 1988
Jessie Mills
Beyond the City Limits
Movie • 2001
Lexi
Dead Man on Campus
Movie • 1998
Lucy
American Reunion
Movie • 2012
Michelle Levenstein
Love, Wedding, Marriage
Movie • 2011
Courtney
For My Daughter's Honor
Movie • 1996
Kelly
The Stranger Beside Me
Movie • 1995
Dana
Office Race
Movie • 2023
Pat
Impure Thoughts
Movie • 1986
Patty Stubbs
Hayley Wagner, Star
Movie • 1999
Jenna Jakes
Do You Take This Man
Movie • 2017
Rachael
More Business of Being Born
Movie • 2011
Self [Part 2,3]
Boys and Girls
Movie • 2000
Betty
A Case for Life
Movie • 1996
Iris
Farce of the Penguins
Movie • 2006
Hottie Penguin (voz)
Playboy Mansion Parties Uncensored
Movie • 2001
Self
Kim Possible
Movie • 2019
Dr. Ann Possible
You Might Be the Killer
Movie • 2019
Chuck
Flora & Ulysses
Movie • 2021
Phyllis
American Pie: Revealed
Movie • 2004
Self
Abducted: The Mary Stauffer Story
Movie • 2019
Mary Stauffer
Solo Mio
Movie • 2026
Meghan
American Pie: Beneath the Crust Vol. 2
Movie
Self
Buffy the Vampire Slayer: The Animated Series
Movie • 2004
Willow Rosenberg
Man of the House
Movie • 2018
Jessie
That '70s Show
TV • 1998
Suzy Simpson
Buffy the Vampire Slayer
TV • 1997
Willow Rosenberg
The Simpsons
TV • 1989
Melody Juniper (voice)
The Ellen DeGeneres Show
TV • 2003
Self
Veronica Mars
TV • 2004
Trina Echolls
How I Met Your Mother
TV • 2005
Lily Aldrin
The Daily Show
TV • 1996
Self
Touched by an Angel
TV • 1994
Cassie Peters
The Torkelsons
TV • 1991
Samantha
The Wild Thornberrys
TV • 1998
Gerda (voice)
Angel
TV • 1999
Willow Rosenberg
Roseanne
TV • 1988
The Tonight Show with Jay Leno
TV • 1992
Buffy the Animated Series
TV • 2008
Willow Rosenberg
Late Night with Conan O'Brien
TV • 1993
Self - Guest
Free Spirit
TV • 1989
Jessie Harper
100 Deeds for Eddie McDowd
TV • 1999
The Goode Family
TV • 2009
I Love the '70s: Volume 2
TV • 2006
Self
The Late Late Show with Craig Kilborn
TV • 1999
Self - Guest
Doogie Kamealoha, M.D.
TV • 2021
Dawn
Adorableness
TV • 2021
Self
The Bonnie Hunt Show
TV • 2008
Self
American Dad!
TV • 2005
Lexie (voice)
American Dad!
TV • 2005
Ugly Stepsister #2 (voice)
Star Plates
TV • 2016
Penn & Teller: Fool Us
TV • 2011
Self - Host
MTV Movie & TV Awards
TV • 1992
Self - Presenter
Dancing with the Stars
TV • 2005
Self - Contestant
Rugrats
TV • 1991
Cynthia P.I. (voice)
The Kelly Clarkson Show
TV • 2019
Self
Fancy Nancy
TV • 2018
Claire Clancy (voice)
The Reichen Show
TV • 2005
Self
Teen Choice Awards
TV • 1999
Self
The Gong Show
TV • 2017
Self - Judge
Sofia the First
TV • 2013
(voice)
Entertainment Tonight
TV • 1981
Self
The $100,000 Pyramid
TV • 2016
Self
King of the Hill
TV • 1997
Stacey Gibson (voice)
American Dad!
TV • 2005
Chelsea (voice)
Girl Scout Cookie Championship
TV • 2020
Self - Host
Watch What Happens Live with Andy Cohen
TV • 2009
Self - Guest
Hollywood Game Night
TV • 2013
Self
Outmatched
TV • 2020
Beth
Outrageous Pumpkins
TV • 2020
Self - Host
Fancy Nancy: Fancy It Yourself
TV • 2019
Nancy
Beat Bobby Flay
TV • 2013
Self
The Megan Mullally Show
TV • 2006
Self - Guest
Pepsi Smash
TV • 2003
Self - Host
Jimmy Kimmel Live!
TV • 2003
Self
Dancing with the Stars
TV • 2005
Self - Audience Member
Dancing with the Stars
TV • 2005
Self - Rehearsal Visitor
Robot Chicken
TV • 2005
Steelheart (voice)
Picket Fences
TV • 1992
Peggy Patterson