Although they may have the most dedicated following of anyone on this list the odds of Insane Clown Posse ever getting into the Hall could be the lowest of anyone on this list.  Sure they sold records and filled concert halls and literally created their own brand; but it was that cartoonish Hardcore Hip Hop style that gained them little fans in the critical world, and for every music fan that reveres them, there can be easily found a fan who detests them.  Not exactly the formula for induction, not that ICP or their fans would care anyway.