StingingVelvet: The DLC for Sleeping Dogs is truly worthless and superfluous. I would not let it influence your buying decision in the least.
dirtyharry50: That's good to know but I have more than enough to play for a long time so I'll just wait for the game to be cheaper anyway.
As with mostly all DLC it just adds flavour and is totally optional, I'll give you that.
But North Point, Zodiac and Martial Arts are really worthwhile if you like beating up thugs and Ghosts.
And yes, the base game can hold up by itself and no DLC is needed to enjoy the game. And any other DLC than the above is really only worthwhile buying for $1 or so.
But "truly worthless", def. not.
I don't know why but this game strikes a string in my game needs that has not been strung for quite some time. I guess my John Woo, Tsui Hark, Bruce Lee etc. Eastern youth is coming back ;D