Alyson Hannigan

Alyson Hannigan became a household name among nerds everywhere when she starred in the Joss Whedon television show, Buffy the Vampire Slayer as Willow.  Soon, even the mainstream would come to adore Hannigan when she played the band nerd in the American Pie trilogy.  Now, fans can still catch Alyson on television every week with her starring role as Lily on How I Met Your Mother.
Hannigan married Buffy / Angel co-star Alxis Denisof in 2003 and the two of them have a daughter, Satyana Denisof together.