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31+ Amazing Photos of Crista Flanagan. Crista flanagan (born february 24, 1976) is an american comedic actress best known for her work as a cast member on the fox sketch comedy series madtv from . She appears as the sterling cooper advertising agency secretary, lois sadler. Thank you for making the guacamole @elizmort22! Crista flanagan (born february 24, 1976) is an american actress. S t a n d u p's profile picture.
