A great movie with an all-star cast and an intriguing plot line, The Departed has very few flaws.

Rating: 9/10 (14 March 2011)

Storyline
The plot line that the departed follows is sort of cat and mouse type set up. It is the story of two rats, one who is loyal to the Massachusetts state police and the other to Boston Irish crime leader Frank Costello. Billy Costigan is the man who is a good and some what honest cop who Queenan and Dignam are prejudice of because of his family history. While Colin Sullivan who looked up to Costello as a sort of father figure in his youth is the mole inside the state police. Both scramble to find the identity of the other while billy's superiors use him to gather evidence against Costello, while Costello is using Sullivan to keep the state police from gathering evidence against him.
The Good
The irony to the plot line creates an interesting concept to follow. The man who would become the undercover officer the police needed and who could be potentially essential to bringing down Costello is at first quickly rejected from becoming a regular state trooper, while the man who is an informant for Costello is quickly accepted. The twin story lines creates a good effect on the viewer by allowing both stories to unfold around the characters with their paths crossing. Another excellent aspect of The Departed is the characters, the characters have a lot of depth so much so that they seem like they could all exist, from the criminal Costello to the humble cop Captain Queenan. This movie has a large amount of incredible actor some considered to be the best around, with Leonardo DiCaprio, Jack Nicholson, Matt Damon, Mark Wahlberg, and Martin Sheen topping the list. This movie entertains you through its entirety until it comes to an unexpected and satisfying conclusion.
The Bad
Some have said this movie is over done when compared to the original Infernal Affairs. This could seem confusing to some who don't follow it closely because of the two different characters it follows almost an equal amount of time.
and The Conclusion
This movie can entertain almost anyone, with a great storyline and a fantastic cast. Thats why the departed gets a 9/10 from me.