My son is INCREDIBLE HULK incarnate. He actually broke his old crib ... yes, he did. Mind you, it wasn't some cheap crib that we got but as someone said, maybe he had an incredible hulk moment and managed to tear it apart.
So we got a new one and the one we bought is no longer elevated ... it lies flat on the ground and is big enough to fit even one of the parents.
This is B looking a tad bit miserable since he can no longer gnaw at his crib (clothe doesn't taste that good.) He does love the fact that he gets to really roll around now more than ever.