Alyson Hannigan
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).
Gallery
Known For
Acting History
2026
Solo Mio as Meghan
2023Office Race as Pat
2021Doogie Kamealoha, M.D. as Dawn
2021Adorableness as Self
2021Flora & Ulysses as Phyllis
2020Outrageous Pumpkins as Self - Host
2020Girl Scout Cookie Championship as Self - Host
2020Outmatched as Beth
2019Abducted: The Mary Stauffer Story as Mary Stauffer
2019The Kelly Clarkson Show as Self
2019You Might Be the Killer as Chuck
2019Fancy Nancy: Fancy It Yourself as Nancy
2019Kim Possible as Dr. Ann Possible
2018Fancy Nancy as Claire Clancy (voice)
2017Do You Take This Man as Rachael
2017The Gong Show as Self - Judge
2016Star Plates
2016The $100,000 Pyramid as Self
2013Beat Bobby Flay as Self
2013Hollywood Game Night as Self
2013Sofia the First as (voice)
2012American Reunion as Michelle Levenstein
2011More Business of Being Born as Self [Part 2,3]
2011Love, Wedding, Marriage as Courtney
2011Penn & Teller: Fool Us as Self - Host
2009Watch What Happens Live with Andy Cohen as Self - Guest
2009The Goode Family
2008The Bonnie Hunt Show as Self
2008Buffy the Animated Series as Willow Rosenberg
2006Farce of the Penguins as Hottie Penguin (voz)
2006The Megan Mullally Show as Self - Guest
2006I Love the '70s: Volume 2 as Self
2006Date Movie as Julia Jones
2005The Reichen Show as Self
2005How I Met Your Mother as Lily Aldrin
2005Dancing with the Stars as Self - Contestant
2005Dancing with the Stars as Self - Audience Member
2005Dancing with the Stars as Self - Rehearsal Visitor
2005Robot Chicken as Steelheart (voice)
2005American Dad! as Lexie (voice)
2005American Dad! as Ugly Stepsister #2 (voice)
2005American Dad! as Chelsea (voice)
2004Veronica Mars as Trina Echolls
2004American Pie: Revealed as Self
2004Buffy the Vampire Slayer: The Animated Series as Willow Rosenberg
2003The Ellen DeGeneres Show as Self
2003American Wedding as Michelle Flaherty
2003Pepsi Smash as Self - Host
2003Jimmy Kimmel Live! as Self
2001Beyond the City Limits as Lexi
2001American Pie 2 as Michelle Flaherty
2001Playboy Mansion Parties Uncensored as Self
2000Boys and Girls as Betty
1999100 Deeds for Eddie McDowd
1999Angel as Willow Rosenberg
1999Hayley Wagner, Star as Jenna Jakes
1999Teen Choice Awards as Self
1999American Pie as Michelle Flaherty
1999The Late Late Show with Craig Kilborn as Self - Guest
1998The Wild Thornberrys as Gerda (voice)
1998That '70s Show as Suzy Simpson
1998Dead Man on Campus as Lucy
1997Buffy the Vampire Slayer as Willow Rosenberg
1997King of the Hill as Stacey Gibson (voice)
1996For My Daughter's Honor as Kelly
1996The Daily Show as Self
1996A Case for Life as Iris
1995The Stranger Beside Me as Dana
1994Touched by an Angel as Cassie Peters
1993Late Night with Conan O'Brien as Self - Guest
1992Picket Fences as Peggy Patterson
1992MTV Movie & TV Awards as Self - Presenter
1992The Tonight Show with Jay Leno
1991The Torkelsons as Samantha
1991Rugrats as Cynthia P.I. (voice)
1989The Simpsons as Melody Juniper (voice)
1989Free Spirit as Jessie Harper
1988My Stepmother Is an Alien as Jessie Mills
1988Roseanne
1986Impure Thoughts as Patty Stubbs (as Allison Hannigan)
1981Entertainment Tonight as Self
—American Pie: Beneath the Crust Vol. 2 as Self
—Dodie & Cheryl Get Hitched as Cheryl Crum