Schematic but tense and quite sad story of alienation involving a cop who goes undercover in the mob and the gang mole who infiltrates the police. Strong performances by Tony Leung and Andy Lau as the two men living a decade out in the cold. One of the better gangster film of the century.
Confusing start as all the Chinese look similar.Could not make out who was the mole.Got better with unusual finish.
Hollywood remade it as THE DEPARTED.I have ordered Part 2.
It certainly had it's moments which is why I would probably give it an 8/10 (4/5 on here) it's interesting how it came to influence The Departed so much but in it's own being a good movie and having many memorable moments, the performances like Steve said are great and one of the reasons why this film is so good.