The Departed (DVD, 2007)

The movie is a cat-and-mouse game where it is never too clear who is the cat and who is the mouse; nor is it clear with which character we are supposed to identify. It has borrowed heavy from the Hong Kong movie Infernal Affairs. Leonardo DiCaprio stars as a young man from a gangster family, joins the police, and goes undercover to infiltrate Boston's mob. There is Jack Nicholson, who upstages everybody in the picture. Leonardo DiCaprio and Matt Damon do their best to match Nicholson,but its no contest. In supporting roles,
Mark Wahlberg , Martin Sheen, Ray Winstone, Alec Baldwin, and Vera Farmiga.
Its intelligent and has enough twists and turns to keep you on the edge of your seat.