Nope, the mass distribution and gravity is only perfectly cancelled at the exact center. Everywhere else inside the sphere you will get microgravity which will start you falling to the inner edge of the sphere.
Of course if that sphere is large enough, it's going to hurt when you hit the sphere.
If I were a bettin' man, I would take you up on that. It is true that since gravity follows the inverse square rule, gravity increases greatly as you approach the mass, but the aggregate of the gravity from the much larger mass in the other direction cancels it out when inside a hollow sphere. Picture yourself standing (if it were possible) on the inside surface of the hollow sphere. There is a very small mass pulling you down (under your feet), but the rest of the sphere pulling you up (everywhere else). Cancels out. Anybody else out there agree or disagree? Now, if the hollow sphere is John Kerry's cranium...that's a different story.