'Risky Business' is the slick coming-of-age comedy that turned Tom Cruise into a star, most iconically in the scene where he dances through his empty house in a shirt and socks. He plays a suburban teen who, left home alone, gets entangled with a call girl (Rebecca De Mornay) and turns his house into a brothel while his parents are away. Sharper and more cynical than the average teen film, with a dreamy Tangerine Dream score, it became a defining film of the 1980s. Stylish and knowing.