haha, I'd go as far as to say you could eventually learn to manipulate things on an atomic level, and if you can do that, then you could probably just ignite the air, thus giving you a form of pyrokinesis, excite electrons and atmospheric energy to get something close to electricity powers, and really the rest is up to your imagination.
Add in the idea that if you can extend your willpower to an object, then you could supposedly also extend your will to the area around you, in a passive way that gives you continuous awareness of everything around you, giving you a sixth sense of sorts. I guess sort of how Magneto can just sense metal, well like that, but instead you can just sense everything and anything you could possibly want to sense. Such as would be assassins...
It's kind of the all power if you take the base concept of being able to control things with your mind, and expand the applications far beyond the notion of "oohh I can make this chair levitate ooooooh". There's possibly a bunch of other applications that even I can't imagine, and I've thought long and hard about this before.