User blog comment:Leolab/Retroactive Unfair Battle Enforcement/@comment-6771148-20130506040205/@comment-422690-20130507011428

" I'll also name the time in episode III when Palpatine shoots his force lightning at Mace who absorbs it with his light saber. Yes, he did use his light saber to do it, which probably made his job easiers, but I'd be surprised if simply holding it there was the only thing that did it with no use of the force involved in absorbing it."

That's actually an effect of Mace Windu's lightsaber combat style, Vapaad. It's super effective against Darkside users, because it skirts the dark side and turns their own power against them.

However, Mace Windu is a Jedi like any other. He does possess all the standard force powers, and can use them.