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
American Pie Michelle Flaherty
Dodie & Cheryl Get Hitched Cheryl Crum
Date Movie Julia Jones
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
Office Race Pat
Impure Thoughts Patty Stubbs (as Allison Hannigan)
Switched at Birth Gina Twigg, Age 13–16
Hayley Wagner, Star Jenna Jakes
Do You Take This Man Rachael
More Business of Being Born Self [Part 2,3]
Boys and Girls Betty
A Case for Life Iris
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
Solo Mio
Shows
That '70s Show Suzy Simpson
Buffy the Vampire Slayer Willow Rosenberg
The Simpsons Melody Juniper (voice)
The Ellen DeGeneres Show Self
Veronica Mars Trina Echolls
How I Met Your Mother Lily Aldrin
The Daily Show Self
Touched by an Angel Cassie Peters
The Torkelsons Samantha
The Wild Thornberrys Gerda (voice)
Angel Willow Rosenberg
Roseanne
The Tonight Show with Jay Leno
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
The Late Late Show with Craig Kilborn Self - Guest
Adorableness Self
Doogie Kamealoha, M.D. Dawn
The Bonnie Hunt Show
American Dad! Lexie (voice)
American Dad! Ugly Stepsister #2 (voice)
Star Plates
Penn & Teller: Fool Us Self - Host
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)
Fancy Nancy Claire Clancy (voice)
The Reichen Show Self
Teen Choice Awards Self - Presenter
The Gong Show Self - Judge
Sofia the First (voice)
Entertainment Tonight Self
The $100,000 Pyramid Self
King of the Hill Stacey Gibson (voice)
American Dad! Chelsea (voice)
Girl Scout Cookie Championship Self - Host
Watch What Happens Live with Andy Cohen Self - Guest
Hollywood Game Night Self
Outmatched Beth
Outrageous Pumpkins Self - Host
Fancy Nancy: Fancy It Yourself Nancy
Beat Bobby Flay Self
The Megan Mullally Show Self - Guest
