Infernal Affairs is a brave jump from clichéd undercover genre of fiery actions to the battle of wit like the Catch Me If You Can type. Instead of the overly familiar gang wars, this is more in the league of duel of professional grade hi-fi system. The sacrifice of Anthony Wong is truly heroic, and the 'three-year after three-year' trial of Tony Leung is a test of perseverance. Brain is preferred to brawn. It can't be more true when Tony Leung says in the film, "Listen to it, it sounds so empty." Infernal Affairs has become the pride of local cinema and high officials.