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).
as Cheryl Crum
as Willow Rosenberg
as Pat
as Phyllis Buckman
as Dawn
as Self
as Self - Host
as Self - Host
as Beth
as Mary Stauffer
as Chuck
as Dr. Ann Possible
as Nancy
as Claire Clancy (voice)
as Claire Clancy (voice)
as Rachael
as Self - Judge
as Self
as Self
as Self
as (voice)
as Michelle Flaherty-Levenstein
as Self [Part 2,3]
as Courtney
as Self - Host
as Self - Guest
as Hottie Penguin (voice)
as Julia Jones
as Self - Guest
as Self
as Self
as Lily Aldrin
as Self - Contestant
as Lexie (voice)
as Ugly Stepsister #2 (voice)
as Chelsea (voice)
as Self
as Trina Echolls
as Michelle Flaherty
as Self
as Lexi
as Michelle Flaherty
as Betty
as Jenna Jakes
as Michelle Flaherty
as Willow Rosenberg
as Self - Presenter
as Self - Guest
as Lucy
as Gerda (voice)
as Suzy Simpson
as Willow Rosenberg
as Stacey Gibson (voice)
as Kelly
as Iris
as Self
as Dana
as Cassie Peters
as Self - Guest
as Self - Presenter
as Gina Twigg, Age 13–16
as Gina Twigg, Age 13-16
as Samantha
as Cynthia P.I. (voice)
as Melody Juniper (voice)
as Jessie Harper
as Jessie Mills
as Patty Stubbs (as Allison Hannigan)
as Self
as Producer