The document summarizes and compares three movie trailers: 1) American Gangster about a detective pursuing a drug kingpin in 1970s Manhattan. It begins with an establishing shot and ends with the protagonist confronting the detective. 2) White Chicks about two FBI agents going undercover as women. It begins with the agents in action and ends with them attempting to fit in. 3) Sorority Row about sorority sisters covering up an accident. It begins with a party and ends ominously with a killer pursuing the girls.