This is the bio provided by the official site by Fox.
Lizzy Caplan is an actress who, in just a short time, has appeared in numerous critically acclaimed television series.

Most recently, Caplan was the lead in the cable telefilm "Everybody's Doing It," which is based on the current issue of abstinence in high school. She played the recurring character Sarah on the critically acclaimed series "Freaks and Geeks." Last pilot season, Caplan starred with Kate Towne and Gabrielle Union in "Close to Home." Her recent episodic work includes a guest starring role on "Once & Again" and a recurring role in "Smallville."

Caplan's film credits include a role in the comedy "Orange County," which starred Colin Hanks and Jack Black.