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 Meghan
as Self(1 ep)
as Pat
as Dawn(1 ep)
as Self(10 eps)
as Phyllis
as Self - Host(8 eps)
as Self - Host(4 eps)
as Beth(1 ep)
as Mary Stauffer
as Self(1 ep)
as Chuck
as Nancy(20 eps)
as Dr. Ann Possible
as Claire Clancy (voice)(123 eps)
as Jessie
as Rachael
as Self - Judge(1 ep)
as Self(1 ep)
as Self(1 ep)
as Self(1 ep)
as (voice)(1 ep)
as Michelle Levenstein
as Self [Part 2,3]
as Courtney
as Self - Host(109 eps)
as Self - Guest(1 ep)
as Self(1 ep)
as Willow Rosenberg(1 ep)
as Hottie Penguin (voice)
as Self - Guest(1 ep)
as Self(2 eps)
as Julia Jones
as Self(1 ep)
as Lily Aldrin(208 eps)
as Self - Contestant(11 eps)
as Steelheart (voice)(1 ep)
as Lexie (voice)(1 ep)
as Ugly Stepsister #2 (voice)(1 ep)
as Chelsea (voice)(1 ep)
as Trina Echolls(3 eps)
as Self
as Self(4 eps)
as Michelle Flaherty
as Self - Host(1 ep)
as Self - Guest(2 eps)
as Lexi
as Michelle Flaherty
as Betty
as Willow Rosenberg(3 eps)
as Jenna Jakes
as Self(1 ep)
as Michelle Flaherty
as Self - Guest(1 ep)
as Gerda (voice)(1 ep)
as Suzy Simpson(2 eps)
as Lucy
as Willow Rosenberg(144 eps)
as Stacey Gibson (voice)(1 ep)
as Kelly
as Self - Guest(2 eps)
as Iris
as Dana
as Cassie Peters(1 ep)
as Self - Guest(6 eps)
as Self - Guest(2 eps)
as Self - Top Ten Presenter(1 ep)
as Peggy Patterson(1 ep)
as Self - Presenter(1 ep)
as Samantha(2 eps)
as Cynthia P.I. (voice)(2 eps)
as Melody Juniper (voice)(1 ep)
as Jessie Harper(14 eps)
as Jessie Mills
as Patty Stubbs
as Self(1 ep)