Alyson Hannigan (born Allison Lee Hannigan, March 24, 1974) is an American actress best known for playing Willow Rosenberg in the TV series Buffy the Vampire Slayer. She also appeared in films including, as Michelle Flaherty, American Pie (1999), American Pie 2 (2001) and American Wedding (2003).
Born in Washington, DC, her first film role was in My Stepmother is an Alien (1988). Before that she had done a little television work, mostly commercials, and she went on to do a good deal more including Almost Home, Picket Fences, Roseanne and Touched by an Angel before being chosen for Buffy in 1997. By the final season she was earning $250,000 an episode.
It was announced in October 2003 that she had signed a deal with NBC to appear in a comedy, expected to debut in fall 2004. Reports indicated that it was likely to be titled Americana, but the pilot was not part of NBC's 2004 fall lineup.
In early 2004, Hannigan made her West End debut starring in a stage adaptation of When Harry Met Sally at the Theatre Royal Haymarket, opposite Luke Perry.
She owns a home in Sacramento, California and married actor Alexis Denisof on October 11, 2003. Previous relationships include actor Steven Sutphen and Marilyn Manson drummer Ginger Fish.
