Alyson Hannigan in a live action TV movie based on the Disney Channel cartoon "Kim Possible". Hannigan married her "Buffy the Vampire Slayer" and "Angel" co-star Alexis Denisof at Two Bunch Palms Resort in Desert Hot Springs, California, on October 11, 2003. The couple live in Encino, Los Angeles with their two daughters. Alyson Hannigan Alyson Lee Hannigan (born March 24, 1974) is an American actress and television presenter. She is best known for her roles as Willow Rosenberg on the television series "Buffy the Vampire Slayer" (1997–2003), Lily Aldrin on the sitcom "How I Met Your Mother" (2005–2014), and Michelle Flaherty
Buffy the Vampire Slayer (season 4) Buffy the Vampire Slayer (season 4) The fourth season of the television series Buffy the Vampire Slayer premiered on October 5, 1999, on The WB and concluded its 22-episode season on May 23, 2000. It maintained its previous timeslot, airing Tuesdays at 8:00 pm ET. Beginning with this season, the character of Angel was given his own "series", which aired on The WB following "Buffy". Various "Buffy" characters made appearances in "Angel", including Buffy herself; Cordelia Chase, formerly a regular in "Buffy", and Wesley Wyndam-Pryce, who appeared in "Buffy" season three. Season four sees Buffy and Willow enroll at UC