The field equations of all known forces are wave equations with propagation speed of the speed of light. When you think about "things" going faster than light, your thoughts are wrong because all "things" are really composed of waves. These waves are electromagnetic and gravitational and propagate at c.

The only way that something can go faster than light is by a conspiracy of converging waves known as the scissor effect - see http://math.ucr.edu/home/baez/physic.../scissors.html