A cool interactive site put together by the Perimeter Institute, that lets you 'zoom in' to the smallest imaginable scales (below atoms, protons, and fundamental particles) and 'zoom out' to the largest scale in the cosmos (the size of the observable Universe).
Before you think about putting any 'reimagining' of established physics, or solution to some unsolved problem out into the world; tally up your score on the 'crackpot index'. (And possibly think again...)