Alyson Hannigan

LOS ANGELES (Zap2it.com) Former "Buffy the Vampire Slayer" co-star Alyson Hannigan has signed on for her third network comedy pilot on her third network in little over a year. The actress will take a role in the CBS ensemble "How I Met Your Mother."

Set up at 20th Century Fox TV, "Mother" focuses on a middle-aged married man looking back at his single days and how he met his wife. It’s unclear from the Hollywood Reporter what part Hannigan will play in the series, which also stars Neil Patrick Harris ("Doogie Howser, M.D.") and Jason Segel ("Freaks and Geeks").

Earlier this year, Hannigan was set for a supporting role in ABC’s midseason comedy "In the Game." She departed the pilot in January over creative differences and, soon after, the Jennifer Love Hewitt offering was scrapped entirely. Last spring, Hannigan starred in an untitled comedy pilot for NBC. Click Here Hannigan was most recently seen guest starring on UPN’s "Veronica Mars." In addition to her time as Willow Rosenberg on "Buffy," Hannigan is most familiar from the three "American Pie" films.

Also at CBS, Benjamin King (NBC’s "Saving Jessica Lynch") will do the comedy "Stroller Wars" and Australian actress Jenni Baird will appear in the pilot for the legal drama "Conviction."