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 Cla...
Known For
Complete Filmography
Solo Mio
2026
Matt’s fiancé has dreamed of a wedding in Italy. He saves up and flies his whole family over for the wedding and has even booked a lavish honeymoon af...
Office Race
2023
as Pat
An unambitious office worker goes to great lengths—specifically 26.2 miles—to one up his exercise-obsessed, micromanaging boss.
Flora & Ulysses
2021
as Phyllis
When Flora rescues a squirrel she names Ulysses, she is amazed to discover he possesses unique superhero powers, which take them on an adventure of hu...
Abducted: The Mary Stauffer Story
2019
as Mary Stauffer
High school teacher Mary Stauffer and her eight-year old daughter, Beth are held captive for 53 days by an obsessed former student. Based on a true st...
You Might Be the Killer
2019
as Chuck
Counselors are being killed off at summer camp, and Sam is stuck in the middle of it. Instead of contacting the cops, he calls his friend and slasher-...
Kim Possible
2019
as Dr. Ann Possible
Everyday teen hero Kim Possible and her best friend Ron Stoppable embark on their freshman year of high school, all while saving the world from evil v...
Do You Take This Man
2017
as Rachael
When a gay couple's impending wedding hits a snag, the grooms must rely on their friends and family to see them through.
American Reunion
2012
as Michelle Flaherty-Levenstein
The characters we met a little more than a decade ago return to East Great Falls for their high school reunion. In one long-overdue weekend, they will...
More Business of Being Born
2011
as Self [Part 2,3]
Executive Producer Ricki Lake and Filmmaker Abby Epstein follow their landmark documentary,'The Business of Being Born', with an all-new, four part DV...
Love, Wedding, Marriage
2011
as Courtney
A happy newlywed marriage counselor's views on wedded bliss get thrown for a loop when she finds out her parents are getting divorced.
Farce of the Penguins
2006
as Hottie Penguin (voice)
In this spoof of "March of the Penguins," nature footage of penguins near the South Pole gets a soundtrack of human voices. Carl and Jimmy, best frien...
Date Movie
2006
as Julia Jones
Spoof of romantic comedies which focuses on a man, his crush, his parents, and her father.
American Pie: Revealed
2004
as Self
Documentary about the making of American Pie (1999), American Pie 2 (2001) and American Wedding (2003).
American Wedding
2003
as Michelle Flaherty
With high school a distant memory, Jim and Michelle are getting married — and in a hurry, since Jim's grandmother is sick and wants to see him walk do...
Beyond the City Limits
2001
as Lexi
Three women outsmart unsavory men who try to cheat them out of their take in an almost-botched casino heist.
American Pie 2
2001
as Michelle Flaherty
After a year apart - attending different schools, meeting different people - the guys rent a beach house and vow to make this the best summer ever. As...
Playboy Mansion Parties Uncensored
2001
as Self
See inside the exclusive Playboy Mansion, with parties attended by all the A-List celebrities
Boys and Girls
2000
as Betty
Ryan and Jennifer are opposites who definitely do not attract. At least that's what they always believed. When they met as twelve-year-olds, they disl...
Hayley Wagner, Star
1999
as Jenna Jakes
Having outgrown her role, a pampered child actor returns to her family and tries to be an ordinary youngster.
American Pie
1999
as Michelle Flaherty
At a high-school party, four friends find that losing their collective virginity isn't as easy as they had thought. But they still believe that they n...
Dead Man on Campus
1998
as Lucy
Two college roommates venture out to identify a fellow student, who is most likely to commit suicide as it will help them pass the semester.
For My Daughter's Honor
1996
as Kelly
Fourteen-year-old high school student, Amy Dustin, becomes an object of romantic affection to the school's biology teacher and football coach, Pete Na...
A Case for Life
1996
as Iris
To save her unborn child, she had to fight for the right to die. A True Story
The Stranger Beside Me
1995
as Dana
When Jennifer marries Chris, it seems she can finally let go of her tragic past. But behind the perfect facade lies a violent, possessive dark side--a...
Switched at Birth
1991
as Gina Twigg, Age 13–16
This is the story of the two babies who were switched at birth. A few years later when one of the girls gets sick and tests revealed that she was not ...
Switched at Birth
1991
as Gina Twigg, Age 13-16
This is the story of the two babies who were switched at birth. A few years later when one of the girls gets sick and tests revealed that she was not ...
My Stepmother Is an Alien
1988
as Jessie Mills
Trying to rescue her home planet from destruction, a gorgeous extraterrestrial named Celeste arrives on Earth and begins her scientific research. She ...
Impure Thoughts
1986
as Patty Stubbs (as Allison Hannigan)
Four male friends are reunited after not being in contact with each other for several years. However, the meeting place is Purgatory, the afterlife st...
Dodie & Cheryl Get Hitched
N/A
as Cheryl Crum
An offbeat comedy about two small town lesbians who decide to get married and the ugly swell of hypocrisy with which they have to contend.