To my amazement, Apple has a built in VNC in every OS X.
To access it you just have to open Finder and the Connect to Server:

vnc://your_ip_address:port

I used before JollyFastVNC and ChickenOfTheVNC, but with both the mouse is lagging horribly (for most of the time you got 2 pointers and do not know which is the local one and the remote one).

Enjoy!!!!