Alyson Hannigan - Buffy the Vampire Slayer

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. In 2005, Hannigan returned to starring in a regular television series, appearing in the hit comedy, How I Met Your Mother, as Lily, and also playing a recurring guest role on Veronica Mars as Trina Echolls. In February 2006, Hannigan starred as Julia Jones in Date Movie, a parody of romantic comedies. Alyson also was a guest star on the ABC animated sitcom The Goode Family in 2009.