What are we talking about...EU here ?
Well in EU (specifically I, Jedi as it breaks down this stuff the most) Force users fight so well with lightsabers because the force guides their hand. Its why obiwan had luke do the blind training. Using their senses (vision, hearing) would slow them down or even just create hesitation because they feel whats about to happen before they perceive it through regular senses.
But a type of precognition? No. And the dancing crap makes no sense because that means that they are not trying to break the flow, which in a battle you would want to. You want to put your opponent on the defensive/break his flow and in those battles how they show who is on the defensive or offensive is who is walking backwards or forwards...nothing in their actual swordplay shows this