Directed by: Martin Scorsese
Starring: Alec Baldwin, Mark Wahlberg, Matt Damon, Jack Nicholson, Leonardo DiCaprio, Martin Sheen
Character mistake: During the funeral at the end before the 21 gun salute, the NCOIC called for "half left face", that would cause everyone to get shot in the face.
Suggested correction: Half-left face means a 45° left turn (left face is a 90° turn), so wouldn't result in anyone getting shot.
Other mistake: When Costigan drags a handcuffed Sullivan into the elevator, Costigan slams Sullivan against the wall and his left arm is visible and not in handcuffs. (02:13:05)
Surveillance Guy: Who the fuck are you?
Dignam: I'm the guy who does his job. You must be the other guy.
Trivia: This was Martin Scorsese's first film to win Best Picture. And his first Oscar for best Director. Martin also said that this was the first movie he ever made with a plot.