Is it possible in Ubuntu with a touchpad 2-finger scrolling? I do not know how to explain this, but the feeling is like kicking with your foot on a skateboard: When you scroll down a long page - if you do a fast 2-finger movement it keeps scrolling down (although decelerating) so you scroll much faster.
Right now in my Ubuntu installation: as soon as your fingers leave the touchpad, the scrolling abruptly stops. OSX Touchpad behaviour is much more natural in this case.