Meh, I liked it ok when it came out. But if you liked it, you need to go see Infernal Affairs, the way better original version. Incredible movie.

You know what I don't like about it? THE END. When they all (spoiler spoiler). That made me sad.

But, I think the movie was AMAZING and evryone should see it.

In the original, the 'evil' mole has a different fate. The movie is more about suffering in the real world instead of a simple end.

Also, the characters are less boring. The evil people in the departed are just plain evil, in infernal affairs they're more cool.