"Monster's Ball" (2001). After a family tragedy, a racist prison guard reexamines his attitudes while falling in love with the African American wife of the last prisoner he executed. Billy Bob Thornton and Helle Berry are great in this very moving film.
Training Day has to be one of the best acting performance by Denzel Washington in his career. He plays a crooked cop who gets a rookie cop, played by Ethan Hawke. This movie is definitely one of the best movies of our generation and Denzel, in his Oscar winning performance, has a big part to do with the success.