It's such a refresher to see Tony Leung starring in a film that is not from Wong Kar-wai. But nevertheless, be it a Kar-wai film or an Andrew Lau (as per this case) film, it doesn't matter anyway. Infernal Affairs stars two of Hong Kong's biggest stars: Tony Leung and Andy Lau. Leung and Lau are great contrasts to each other but at the same time, also compliments each other. With Lau's charismatic face, he delivers his character with such decency all the while keeping a dark secret. Leung on the other hand, has always been a playful character (he has played a policeman in Chungking Express too!) and his presence on screen is just really nice to watch. Some say that Martin Scorsese's The Departed is a more "soulless" adaptation of Infernal Affairs but I can't say since I haven't seen the former. But the fact that it is a remake of the latter is enough of a statement to say it's good. I just hope those who watched the former know that it's based of on the latter (I mean with a cast like Dicarpio and Damon, it's difficult not to forget). Infernal Affairs is intense, gritting and an exciting film to watch. The fact that you have a mole in the mafia and the mole in the police and it's a race against time to figure out the two is already enough to make something worth watching. Living in Hong Kong (and sometimes even taking it for granted), the cinematography of the city here is amazing. There is as much vibrancy as there is much darkness that embodies the two main characters as well. The action isn't your-head-over-heels action compared to Western films but there's still that edge-of-your-seat feeling. So much dramatic tension and suspense especially on which mole will be figured out first. Absolutely love that build-up before Eric Tsang (whom I know more as a comedian to be honest so his role here is a refresher for me too and he delivered it well) smashed Tony Leung's cast on the table -- I was surprised. It was too good of a scene. Add that up with music that gives you such adrenaline, you won't be able to take your eye off the screen. And that build-up up the way to the finale -- just brilliantly done. So many scenes that just gives you mini heart attacks. I couldn't ask for a better ending as well. I always saw Hong Kong crime thrillers as cheap and ambitious but that's a blind opinion since I haven't seen one before (except for some Jackie Chan classics which I'm not even sure counts as crime thriller) and then came Infernal Affairs. I take it back, Hong Kong crime thrillers are great.