I like this because I've programmed kuka bots.
Force-feedback is what makes these robots execute "human" maneuvres. If you directly steer the position of the robot they shake, they "force", they're unable to pick stuff up because they exert so much force at the least bit of unexpected reaction that whatever they're grabbing crumbles. In short, they're stupid, shaky machines.
With force feedback, you can do neat tricks.
For example, steering the expected downard force will allow a robot to balance a place (and 10 plates too, if your feedback loop runs fast enough) on a stick without it falling over. It will allow a solid steel robot hand capable of crushing a car to pick up an apple without scratching it (a big problem in trying to design fruit-plucking robots : the fruit has an irritating tendency to be completely destroyed by the plucking machine).
I would like to see how effective a robot would be able to walk by dividing the force vector I'd like to see for the body over the different legs (ie it would have to counter gravity, and get the body ahead some). I think (hope) a robot controlled like this would be able to run and even to jump. But you really need to have a force feedback loop controlling the legs to get this operational. And I'd like to do this for a somewhat reasonable price.