jem83, you cant call it the best show in history when there are shows like the shield, fringe, dragon ball z, sorpnaos and house around, just to name a few.
hell in terms of recent shows, person of interest, strike back, spartacus, arrow, and attack on titan beat it in terms of entertainment.
in fact, the show attack on titan has had only 21 episodes aired so far and it beats breaking bad in terms of sheer suspense, drama, pacing and overall entertainment.