Calista Flockhart – Walks out with Her Dogs in LA. Calista Flockhart in a Black Face Mask Walks Her Dogs in Pacific Palisades. Calista Kay Flockhart is an American actress. On television, she is best known for her roles as the title character on Ally McBeal, Kitty Walker on Brothers & Sisters, and Cat Grant on Supergirl. In film, she is known for roles in The Birdcage, A Midsummer Night’s Dream, and Things You Can Tell Just by Looking at Her.