The Big Easy (1987)
An atmospheric and sexy crime caper, this stars Dennis Quaid as a New Orleans police detective. He's a smooth talker who butts heads with the new assistant district attorney, Ellen Barkin. She's rigid and plays by the rules; he is mildly corrupt. They soon find themselves romantically entwined, and a bit chagrined. I love this movie - the Big Easy captures the city's lush and dramatic atmosphere, the performances are excellent, and the cinematography is beautiful.