Kaley Cuoco is an American film and television actress and singer. She is best known for her roles as Bridget Hennessy on the sitcom 8 Simple Rules, Billie Jenkins on the supernatural drama Charmed, and Penny on the sitcom The Big Bang Theory.
Physicists at Caltech, Leonard Hofstadter and Sheldon Cooper, live normally near their two equally geeky and social awkward friends. However, their lives change when a waitress moves into the flat next to them.