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).
Movies
Date Movie
Julia Jones
American Pie
Michelle Flaherty
American Pie 2
Michelle Flaherty
American Wedding
Michelle Flaherty
My Stepmother Is an Alien
Jessie Mills
Beyond the City Limits
Lexi
Dead Man on Campus
Lucy
American Reunion
Michelle Flaherty-Levenstein
Love, Wedding, Marriage
Courtney
For My Daughter's Honor
Kelly
The Stranger Beside Me
Dana
Impure Thoughts
Patty Stubbs (as Allison Hannigan)
Switched at Birth
Gina Twigg, Age 13–16
Boys and Girls
Betty
A Case for Life
Iris
Do You Take This Man
Rachael
Farce of the Penguins
Hottie Penguin (voice)
Playboy Mansion Parties Uncensored
Self
Kim Possible
Dr. Ann Possible
You Might Be the Killer
Chuck
Flora & Ulysses
Phyllis Buckman
Switched at Birth
Gina Twigg, Age 13-16
American Pie: Revealed
Self
Abducted: The Mary Stauffer Story
Mary Stauffer
Dodie & Cheryl Get Hitched
Cheryl Crum
Hayley Wagner, Star
Jenna Jakes
More Business of Being Born
Self [Part 2,3]
Office Race
Pat
Shows
That '70s Show
Suzy Simpson
The Ellen DeGeneres Show
Self
Veronica Mars
Trina Echolls
The Torkelsons
Samantha
The Daily Show
Self
Touched by an Angel
Cassie Peters
The Tonight Show with Jay Leno
Roseanne
Buffy the Animated Series
Willow Rosenberg
Late Night with Conan O'Brien
Self - Guest
Free Spirit
Jessie Harper
100 Deeds for Eddie McDowd
The Goode Family
I Love the '70s: Volume 2
Self
How I Met Your Mother
Lily Aldrin
The Simpsons
The Wild Thornberrys
Gerda (voice)
Angel
Willow Rosenberg
The Megan Mullally Show
Self
The Late Late Show with Craig Kilborn
Self - Guest
The Bonnie Hunt Show
Buffy the Vampire Slayer
Willow Rosenberg
Penn & Teller: Fool Us
Self - Host
Fancy Nancy
Claire Clancy (voice)
The Reichen Show
Self
The Gong Show
Self - Judge
Sofia the First
(voice)
The $100,000 Pyramid
Self
American Dad!
Chelsea (voice)
Girl Scout Cookie Championship
Self - Host
Outmatched
Beth
Hollywood Game Night
Self
Outrageous Pumpkins
Self - Host
Fancy Nancy: Fancy It Yourself
Nancy
Adorableness
Self
American Dad!
Ugly Stepsister #2 (voice)
King of the Hill
Stacey Gibson (voice)
Doogie Kamealoha, M.D.
Dawn
American Dad!
Lexie (voice)
Star Plates
MTV Movie & TV Awards
Self / Presenter
Dancing with the Stars
Self - Contestant
Rugrats
Cynthia P.I. (voice)
The Kelly Clarkson Show
Fancy Nancy
Claire Clancy (voice)
Teen Choice Awards
Self - Presenter
Entertainment Tonight
Self
Watch What Happens Live with Andy Cohen
Self - Guest