CBS

Alyson Hannigan

Alyson Hannigan has enjoyed a widely varied career, captivating audiences in both television and film.

Due for release in 2012, Hannigan will reprise her role in "American Reunion," as Michelle Flaherty-Levenstein. The film will be the fourth installment to the "American Pie" series, which rank among the top-grossing films produced worldwide.

Hannigan's other feature film credits include "Date Movie," "American Pie" "American Pie 2," "American Wedding," "My Stepmother is An Alien," "Dead Man on Campus" and "Boys and Girls."

On the small screen, Hannigan starred in the hugely popular drama "Buffy: the Vampire Slayer." She portrayed 'Willow Rosenberg,' Buffy's best friend and confidant.  She also guest starred on a number of popular television shows including "Picket Fences," on the Network, and "Roseanne."

Hannigan was born in Washington D.C., moved to Atlanta at age 2. She resides in Los Angeles. Her birth date is March 24.