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).
Known For
TV
The Simpsons
Melody Juniper (voice)
1989
TV
The Daily Show
Self - Guest
1996
TV
American Dad!
Lexie (voice)
2005
TV
American Dad!
Ugly Stepsister #2 (voice)
2005
TV
American Dad!
Chelsea (voice)
2005
TV
Watch What Happens Live with Andy Cohen
Self - Guest
2009
TV
The Kelly Clarkson Show
Self
2019
TV
Late Show with David Letterman
Self - Guest
1993
TV
Late Show with David Letterman
Self - Top Ten Presenter
1993
TV
How I Met Your Mother
Lily Aldrin
2005
TV
King of the Hill
Stacey Gibson (voice)
1997
TV
Dancing with the Stars
Self - Contestant
2005
TV
Dancing with the Stars
Self - Audience Member
2005
TV
Dancing with the Stars
Self - Rehearsal Visitor
2005
TV
Buffy the Vampire Slayer
Willow Rosenberg
1997
TV
Jimmy Kimmel Live!
Self
2003
TV
Jimmy Kimmel Live!
Self - Guest
2003
TV
Rugrats
Cynthia P.I. (voice)
1991
TV
Robot Chicken
Steelheart (voice)
2005
TV
Veronica Mars
Trina Echolls
2004
Filmography
2026FilmSolo Mioas Meghan2025TVDancing with the Stars Official Podcastas Self2023FilmOffice Raceas Pat2021TVDoogie Kamealoha, M.D.as Dawn2021TVAdorablenessas Self2021FilmFlora & Ulyssesas Phyllis2020TVOutrageous Pumpkinsas Self - Host2020TVGirl Scout Cookie Championshipas Self - Host2020TVOutmatchedas Beth2019FilmAbducted: The Mary Stauffer Storyas Mary Stauffer2019TVThe Kelly Clarkson Showas Self2019FilmYou Might Be the Killeras Chuck2019TVFancy Nancy: Fancy It Yourselfas Nancy2019FilmKim Possibleas Dr. Ann Possible2018TVFancy Nancyas Claire Clancy (voice)2018FilmMan of the Houseas Jessie2017FilmDo You Take This Manas Rachael2017TVThe Gong Showas Self - Judge2016TVStar Plates2016TVThe $100,000 Pyramidas Self2013TVBeat Bobby Flayas Self2013TVHollywood Game Nightas Self2013TVSofia the Firstas (voice)2012FilmAmerican Reunionas Michelle Levenstein2011FilmMore Business of Being Bornas Self [Part 2,3]2011FilmLove, Wedding, Marriageas Courtney2011TVPenn & Teller: Fool Usas Self - Host2009TVWatch What Happens Live with Andy Cohenas Self - Guest2009TVThe Goode Family2008TVThe Bonnie Hunt Showas Self2008TVBuffy the Animated Seriesas Willow Rosenberg2006FilmFarce of the Penguinsas Hottie Penguin (voz)2006TVThe Megan Mullally Showas Self - Guest2006TVI Love the '70s: Volume 2as Self2006FilmDate Movieas Julia Jones2005TVThe Reichen Showas Self2005TVHow I Met Your Motheras Lily Aldrin2005TVDancing with the Starsas Self - Contestant2005TVRobot Chickenas Steelheart (voice)2005TVAmerican Dad!as Lexie (voice)2004TVVeronica Marsas Trina Echolls2004FilmAmerican Pie: Revealedas Self2003TVThe Ellen DeGeneres Showas Self2003FilmAmerican Weddingas Michelle Flaherty2003TVPepsi Smashas Self - Host2003TVJimmy Kimmel Live!as Self2001FilmBeyond the City Limitsas Lexi2001FilmAmerican Pie 2as Michelle Flaherty2001FilmPlayboy Mansion Parties Uncensoredas Self2000FilmBoys and Girlsas Betty1999TV100 Deeds for Eddie McDowd1999TVAngelas Willow Rosenberg1999FilmHayley Wagner, Staras Jenna Jakes1999TVTeen Choice Awardsas Self1999FilmAmerican Pieas Michelle Flaherty1999TVThe Late Late Show with Craig Kilbornas Self - Guest1998TVThe Wild Thornberrysas Gerda (voice)1998TVThat '70s Showas Suzy Simpson1998FilmDead Man on Campusas Lucy1997TVBuffy the Vampire Slayeras Willow Rosenberg1997TVKing of the Hillas Stacey Gibson (voice)1996FilmFor My Daughter's Honoras Kelly1996TVThe Daily Showas Self - Guest1996FilmA Case for Lifeas Iris1995FilmThe Stranger Beside Meas Dana1994TVTouched by an Angelas Cassie Peters1993TVLate Night with Conan O'Brienas Self - Guest1993TVLate Show with David Lettermanas Self - Guest1992TVPicket Fencesas Peggy Patterson1992TVMTV Movie & TV Awardsas Self - Presenter1992TVThe Tonight Show with Jay Leno1991TVThe Torkelsonsas Samantha1991TVRugratsas Cynthia P.I. (voice)1989TVThe Simpsonsas Melody Juniper (voice)1989TVFree Spiritas Jessie Harper1988FilmMy Stepmother Is an Alienas Jessie Mills1988TVRoseanne1986FilmImpure Thoughtsas Patty Stubbs1981TVEntertainment Tonightas Self—FilmDodie & Cheryl Get Hitchedas Cheryl Crum—FilmAmerican Pie: Beneath the Crust Vol. 2as Self