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Alyson Hannigan

Alyson Hannigan was born in Washington, D.C., to Emilie (Posner), a real estate agent, and Al Hannigan, a truck driver. She began her acting career in Atlanta at age 4 in commercials for companies like McDonald's, Six Flags, and Oreos. As a veteran television actress, she guest-starred in Picket Fences (1992), Roseanne (1988), Touched by an Angel (1994), and The Torkelsons (1991) before starring in her best known roles in Buffy the Vampire Slayer (1997) as "Willow Rosenberg" and How I Met Your Mother (2005) as "Lily Aldrin." She's hosted Penn & Teller: Fool Us since 2016. Hannigan married Alexis Denisof, her co-star from Buffy the Vampire Slayer and Angel, on October 11, 2003. The couple lives in Encino, Los Angeles with their two daughters.

Known For


Cast Credits

Adorableness (2021)
Starring as Panelist (10 episodes)
Outrageous Pumpkins (2020)
Starring as Host
OutMatched (2020)
Guest starring as Beth
The Kelly Clarkson Show (2019)
Guest starring as Alyson Hannigan (4 episodes)
Fancy Nancy (2018)
Starring as Claire Clancy
Pure (2017)
Starring as Esther Dunkel (2 episodes)
  • Episode 2x06: Wedding (Jul 2, 2019)
  • Episode 2x05: Penance (Jun 25, 2019)
The McCarthys (2014)
Guest starring as Pam
MasterChef Junior (2013)
Guest starring as Alyson Hannigan
Hollywood Game Night (2013)
Guest starring as Alyson Hannigan (2 episodes)
The Talk (2011)
Guest starring as Alyson Hannigan
Penn & Teller: Fool Us (2011)
Starring as Host (95 episodes)
The Goode Family (2009)
Guest starring as Michelle
How I Met Your Mother (2005)
Starring as Lily Aldrin (187 episodes)
Robot Chicken (2005)
Guest starring as Steelheart
American Dad! (2005)
Guest starring as Chelsea (2 episodes)
Veronica Mars (2004)
Guest starring as Trina Echolls (3 episodes)
The Ellen DeGeneres Show (2003)
Guest starring as Alyson Hannigan (2 episodes)
Angel (1999)
Guest starring as Willow Rosenberg (3 episodes)
That '70s Show (1998)
Guest starring as Suzy Simpson (2 episodes)
Buffy the Vampire Slayer (1997)
Starring as Willow Rosenberg (144 episodes)
King of the Hill (1997)
Guest starring as Stacey Gibson
Touched by an Angel (1994)
Guest starring as Cassie Peters
Inside the Actors Studio (1994)
Guest starring as Alyson Hannigan
Picket Fences (1992)
Guest starring as Peggy Patterson
Rugrats (1991)
Guest starring as Cynthia P.I. (2 episodes)
The Simpsons (1989)
Guest starring as Melody
Free Spirit (1989)
Starring as Jessie Harper (14 episodes)
Roseanne (1988)
Guest starring as Jan

Crew Credits

Penn & Teller: Fool Us (2011)
Show crew as Producer (12 episodes)
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